Bidding auction device and bidding auction method

Abstract

To provide a bidding auction device for mediating between a seller and a buyer of a product to be sold, and a bidding auction method using the bidding auction device.SOLUTION: A bidding auction device (1) is provided with a plurality of seller terminal devices (3) into which sellers input seller information including products to be auctioned and the sellers' names, an auction intermediation device (2) that receives the seller information transmitted from each seller terminal device (3), and a plurality of buyer terminal devices (4) that receive product information in the seller information transmitted from the auction intermediation device (2). Based on the product information received by the respective buyer terminal devices (4) from the auction intermediation device (2), buyers transmit buyer information including products they want to purchase, desired purchase prices, and the buyers' names from the respective buyer terminal devices (4) to the auction intermediation device (2) to participate in the auction. When the auction intermediation device (2) receives, from the buyer terminal devices (4), a large number of different pieces of buyer information, the auction intermediation device selects one or more pieces of buyer information in order of the highest desired purchase price of the buyers.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a bidding and auction device that mediates between a seller and a buyer of a commodity to be sold, and a bidding and auction method in which a seller and a buyer of a commodity who have become acquainted with each other by using the bidding and auction device carry out negotiations for a sale. [Background technology]

[0002] For example, in traditional negotiations to buy and sell vehicles, the seller and the buyer meet and enter into a contract to determine the condition and conditions of the vehicle that the seller wishes to sell, as well as the sales price. Next, the buyer assesses the actual selling price of the vehicle and, in consultation with the seller, determines the selling price of the actual vehicle to be sold. After that, the buyer negotiates with the seller, and when an agreement is reached on the purchase price, the purchase deal is concluded. In this way, traditional negotiations are characterized by the procedure in which the selling price of each vehicle is determined individually between the seller and the buyer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2023-43756 [Patent Document 2] Patent Publication No. 2022-172534 [Patent Document 3] JP2009-129286A [Patent Document 4] Patent No. 6788296

[0004] Patent Document 1 shows a vehicle sales management device that includes a store information storage unit that stores store information including a store ID and store location information for each of multiple stores that inspect and maintain vehicles, a receiving unit that receives customer product information entered by the customer including information on the type of vehicle desired to be purchased and the purchase area, a point amount determination unit that selects multiple store candidates to be presented to the customer based on the store information and the customer product information and determines the amount of points the customer can use at each of the selected multiple store candidates, and an output unit that outputs the point amount for each of the selected multiple store candidates to the customer.The customer can obtain information that is useful for the customer to select a store that will provide after-sales service for the vehicle.

[0005] Patent document 2 discloses a vehicle sales support device that includes a control unit that displays pre-set vehicle information related to a vehicle on a first terminal device, and a selection receiving unit that receives a selection of vehicle information, and when the selection of vehicle information is received by the selection receiving unit, the control unit displays individual vehicle information of a plurality of vehicles related to the vehicle information on the first terminal device, making it easy for a person considering purchasing a vehicle to find the desired vehicle.

[0006] Patent document 3 discloses a vehicle sales management system that includes a successful bid vehicle information acquisition means for acquiring successful bid vehicle information from an auction management system, a vehicle price estimation means for estimating the vehicle price based on the successful bid vehicle information acquired by the successful bid vehicle information acquisition means, a payment amount calculation means for determining the deferred amount and purchase guarantee amount when acquiring a specified vehicle under a partial payment contract with a purchase guarantee special clause based on the vehicle price estimated by the vehicle price estimation means and calculating the payment amount to be paid under the partial payment contract with a purchase guarantee special clause based on the deferred amount or the purchase guarantee amount, and a display means for displaying the purchase guarantee amount and payment amount calculated by the payment amount calculation means, and for each of a plurality of patterns with different payment terms for the partial payment contract, the display means displays the payment amount on a single screen, thereby managing vehicle sales in response to the diversification of partial payment contracts.

[0007] Patent Document 4 shows a vehicle sales system that determines the selling price by subtracting the future battery price from the current price of the vehicle, records information in a server indicating that a vehicle with a drive battery at a specified degree of degradation has been sold to a vehicle user on the condition that the vehicle is returned to the vehicle seller after a specified period of time, determines a battery repurchase price based on the degree of degradation of the drive battery when the vehicle is returned, and determines the vehicle repurchase price according to the difference between the future battery price and the battery repurchase price. This vehicle sales system effectively reduces the burden on vehicle users who purchase vehicles equipped with drive batteries, and enables the vehicle to be repurchased after a specified period of time has passed since the sale.

[0008] Conventionally, each automobile dealer who holds a large amount of vehicle appraisal information has a drawback that a sales contract is not finally concluded unless the seller or buyer of the vehicle is sufficiently negotiated with the seller or buyer until the selling price or the purchasing price of the vehicle is decided. For example, when an automobile dealer makes a bid, the dealer must confirm the vehicle information and the market price of used cars, and decide the selling price of the vehicle before making a bid. In addition, conventional bulk appraisal services have a drawback in that the applicant receives a large number of phone calls immediately after applying for a vehicle appraisal, making it difficult to handle the calls. A bidding auction device that forms an auction format in which one or more buyers are appropriately selected from a large number of competing buyers for a product offered by a seller has not been proposed in the past. Summary of the Invention [Problem to be solved by the invention]

[0009] Therefore, the present invention aims to provide a bidding and auction device that mediates between sellers and buyers of products for sale, and a bidding and auction method using the bidding and auction device. Another object of the present invention is to provide a bidding and auction device that introduces multiple buyers who wish to purchase products for sale, basically without the need for telephone correspondence, and a bidding and auction method using the bidding and auction device that selects information on one or more buyers in order of highest price. Another object of the present invention is to provide a bidding and auction device and a bidding and auction method using the bidding and auction device that automatically transmits a multiplier to the average price of products calculated by the auction intermediary device for products displayed on the auction intermediary device, or an additional value to be added to the average price, as desired purchase price information to the auction intermediary device without manually bidding each time, and participates in the auction. [Means for solving the problem]

[0010] The bidding and auction device (1) according to the present invention comprises a plurality of seller terminal devices (3) into which sellers input seller information including the product to be auctioned and the seller's name, an auction intermediation device (2) that receives the seller information transmitted from each seller terminal device (3), and a plurality of buyer terminal devices (4) that receive product information of the seller information transmitted from the auction intermediation device (2). Buyers participate in the auction by transmitting buyer information including the product they wish to purchase, the proposed purchase price, and the buyer's name from each buyer terminal device (4) to the auction intermediation device (2) from the product information received by each buyer terminal device (4) from the auction intermediation device (2).

[0011] When receiving multiple different buyer information from the buyer terminal device (4), the auction intermediary device (2) selects one or more buyer information in descending order of the buyer's desired purchase price. The auction intermediary device (2) then transmits the selected one or more buyer information to the seller terminal device (3) and / or transmits the seller's name and contact information only to the buyer terminal device (4) of the selected buyer information, so that a seller who sees the buyer information displayed on the seller terminal device (3) can individually negotiate a sale with the multiple selected buyers. Effect of the Invention

[0012] The bidding and auction device (1) according to the present invention has the following advantages. 1. The auction intermediation device (2) receives a large number of seller information items from the seller terminal devices (3) of sellers in a wide area, and also receives a large number of buyer information items from the buyer terminal devices (4) of buyers in a wide area, and mechanically selects one or more buyer information items in descending order of the buyers' desired purchase prices, thereby enabling quick bidding and auctioning of products. 2. The bidding and auction device (1) that connects the seller terminal device (3) and the buyer terminal device (4) forms an electronic auction market where sellers and buyers can start buying and selling negotiations. 3. Since the seller and a plurality of buyers automatically selected by the auction intermediation device (2) directly negotiate a sale, the seller can avoid troublesome telephone conversations and troublesome negotiation procedures with sales representatives or intermediaries. 4. Buyers who propose low purchase prices are excluded from the auction, and the use of the bidding auction device (1), which is advantageous to sellers in terms of selling prices, is promoted. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a block diagram showing the electronic configuration of the bidding auction device of the present invention. [Diagram 2] FIG. 1 is a block diagram showing the electronic configuration of a bidding auction device according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] The bidding and auctioning device (1) of the present invention comprises a plurality of seller terminal devices (3, 3a, 3b, 3c) into which sellers input seller information including the product to be auctioned and the seller's name, an auction intermediation device (2) that receives the seller information transmitted from each of the seller terminal devices (3, 3a, 3b, 3c), and a plurality of buyer terminal devices (4, 4a, 4b, 4c) that receive the product information of the seller information transmitted from the auction intermediation device (2). The bidding and auctioning device (1) handles all products that sellers input to the seller terminal device (3) for auction. Products handled by the bidding and auctioning device (1) are selected from, for example, consumer products including vehicles, commercial products, branded products, tangible property rights including real estate, intangible property rights including patents and trademarks, and services provided including moving and remodeling.

[0015] Since it is impossible to explain the embodiment of the bidding and auction device (1) of the present invention for all products to be auctioned, the embodiment of the present invention will be explained by limiting the products to be auctioned by the bidding and auction device (1) to vehicles. However, it is clear that the bidding and auction device and bidding and auction method of the present invention can be applied to other products as well as vehicles. In other words, the bidding and auction device (1) of the present invention can handle tangible and intangible products selected from consumer products other than vehicles, commercial products, branded products, tangible property rights including real estate, intangible property rights including patent rights and trademark rights, and services or services provided including moving and remodeling.

[0016] The seller name is a name or title that represents the entity of the seller. The auction intermediation device (2), which receives seller information transmitted from each of the multiple seller terminal devices (3), transmits product information of the seller information to each buyer terminal device (4). A buyer participates in the auction by transmitting buyer information, including the product he wishes to purchase from the product information in the buyer terminal device (4), the desired purchase price, and the buyer's name, to the auction intermediation device (2). The buyer name is a name or title that represents the entity of the buyer.

[0017] Each of the multiple seller terminal devices (3) and each of the multiple buyer terminal devices (4) is an electronic terminal, including a computer or a smartphone, owned by a company, a store, or an individual engaged in the sale and purchase of vehicles. The seller terminal device (3) and the buyer terminal device (4) are connected to the auction intermediation device (2) via a computer network, including the Internet, an intranet, or a wired or wireless connection device, so that they can communicate with each other in both directions. Therefore, the bidding auction device (1) is connected to the seller terminal device (3) and the auction intermediation device (2) and between the buyer terminal device (4) and the auction intermediation device (2) so that they can send and receive data in both directions. Therefore, an information and electronic communication network is formed that connects the seller terminal device (3) and the buyer terminal device (4) via the auction intermediation device (2).

[0018] When implementing the bidding and auctioning device (1) of the present invention to bid on a vehicle at an auction, the seller inputs seller information including seller vehicle information and seller name information representing the seller into the seller terminal device (3) of the bidding and auctioning device (1) and transmits the seller information to the auction intermediary device (2). The vehicle information includes the type of vehicle to be sold, i.e., the vehicle model: for example, Prius, the vehicle model, i.e., the year: for example, 2020, the vehicle class, i.e., the grade: for example, 2.5S, the body color: black, the accident history: none, the period of use of the vehicle, i.e., the mileage of 10,000 km, etc., and the seller information includes the seller name information, the address or location, the telephone number, and the email address. The seller can access the auction intermediary device (2) at any time from any place where the seller terminal device (3) is located, transmit the seller information, and apply for the auction of the vehicle.

[0019] A buyer participates in an auction by transmitting, from each buyer terminal device (4) to the auction intermediation device (2), buyer information including the product to be auctioned that the buyer wishes to purchase, the desired purchase price, and the buyer's name, which are included in the product information received by each buyer terminal device (4) from the auction intermediation device (2). The buyer information includes the buyer's name information, address or location, telephone number, email address, homepage address, and a management code associated with the buyer information. If an auction usage fee is required in advance when the buyer transmits the buyer information to the auction intermediation device (2), the buyer must pay the auction usage fee in advance to the auction intermediation device (2) and transmit the buyer information including the desired purchase price information to the auction intermediation device (2) from the buyer terminal device (4). The auction usage fee is, for example, 500 yen or 0.1% of the desired purchase price. The auction intermediation device (2) that receives the buyer information from the buyer terminal device (4) does not transmit the buyer information as is to the seller terminal device (3). Furthermore, when the seller's vehicle information is transmitted, the seller and buyer of the vehicle do not meet face to face.

[0020] The auction intermediary device (2), to which the seller transmits seller information from the seller terminal device (3), has an auction storage device (12) that stores a large number of used item information, auction item information, and item selling prices, or is connected to an auction item database. When the item to be auctioned is a vehicle, the auction storage device (12) constitutes an intermediary database that systematically and searchably stores a collection of a large number of vehicle information, seller information for each vehicle, buyer information wishing to auction the vehicle, and identical management codes assigned in association with each vehicle information, seller information, and buyer information, but the management codes are different for each vehicle (item). The information in the intermediary database can be searched for by a search device in the auction intermediary device (2) that is equipped with a computer.

[0021] The auction intermediation device (2) receives the seller information from the seller terminal device (3) and transmits the seller vehicle information included in the seller information together with the associated management code to multiple buyer terminal devices (4). Each of the multiple buyer terminal devices (4) that receive the seller vehicle information from the auction intermediation device (2) displays the seller vehicle information, so that a buyer who wishes to purchase a vehicle can view the seller vehicle information displayed on the buyer terminal device (4) and transmit buyer information including the seller vehicle, the buyer's name, and the buyer's desired purchase price from the buyer terminal device (4) to the auction intermediation device (2), and the buyer can participate in the auction.

[0022] When receiving multiple different buyer information from the buyer terminal device (4) for the same item to be auctioned, the auction intermediary device (2) selects one or more buyer information in descending order of the buyer's desired purchase price, and transmits the selected one or more buyer information to the related seller terminal device (3). At this time, the seller name information may be transmitted simultaneously to the buyer terminal device (4) of the selected buyer information, or the seller name information may be transmitted to the buyer terminal device (4) of the selected buyer information without transmitting one or more buyer information to the seller terminal device (3).

[0023] The auction intermediation device (2) selects one or more buyer information items in descending order of the buyers' desired purchase price and transmits the selected one or more buyer information items to the seller terminal device (3), so that the seller can sell the vehicle (product) at a high price and smoothly advance the sales negotiations by negotiating only with the one or more buyers selected by the seller. Buyers who are not selected in the one or more buyer information items in descending order of the buyers' desired purchase price cannot participate in the sales negotiations. In this specification, the form in which buyers participate in the auction before the auction intermediation device (2) automatically selects a buyer is referred to as the "pre-auction system."

[0024] In the above embodiment, an example has been described in which a buyer enters an auction with the specific desired purchase price transmitted from the buyer terminal device (4) to the auction intermediation device (2), and the auction intermediation device (2) selects one or more buyer information items in descending order of the highest desired purchase price, and transmits the selected one or more buyer information items to the seller terminal device (3). Alternatively, in other embodiments of the present invention, the desired purchase price is represented by a multiplier to be multiplied by the proposed product price transmitted by the auction intermediation device (2) to the buyer terminal device (4) together with the product information, or an additional value to be added to the proposed price.

[0025] That is, the auction intermediary device (2) transmits the proposed price of the product to the buyer terminal device (4) together with the product information to be transmitted to the buyer terminal device (4), and the buyer can express the desired purchase price as a multiplier to be multiplied by the proposed price of the product or an additional value to be added to the proposed price. In this specification, the auction intermediary device (2) automatically calculates the proposed price, and the buyer sets in advance the multiplier (rate, %) to be multiplied by the proposed price of the product or the additional value to be added to the proposed price, and the proposed price transmitted from the auction intermediary device (2) to the buyer terminal device (4) together with the product information is automatically multiplied by the multiplier or the additional value is added, and the buyer participates in the auction, which is referred to as an "automatic auction system." In the automatic auction system, it is more advantageous for the buyer to participate in the auction by transmitting a low multiplier or a subtraction value as an additional value, and be selected.

[0026] For example, by selecting 0.70 to 1.30 as the desired multiplication value, the buyer can participate in the auction with a low or high desired purchase price of 70% to 130% of the average price. Also, for example, the buyer can participate in the auction with a desired purchase price that is an addition or subtraction of an addition value of ±200,000 yen to the average price. In this way, when the buyer information including the proposed price representing the desired purchase price equal to the multiplication value or addition value to the average price is transmitted, the auction intermediation device (2) selects one or more buyer information in descending order of the highest price according to an economic criterion for ranking the buyers in order of the desired purchase price. The selected multiple buyer information is transmitted to the seller terminal device (3) and / or the seller name information is transmitted to the buyer terminal device (4) of the selected multiple buyer information. The seller who has viewed the seller vehicle information, the buyer information, and the buyer's desired purchase price information on the seller terminal device (3) can negotiate a sale with the selected buyer, and the selected buyer can negotiate a purchase with the seller.

[0027] In order to calculate the average price of the item, the auction intermediation device (2) has an auction storage device (12) that stores a large number of used item information, auction item information, and item selling prices, or is connected to an auction item database. The auction intermediation device (2) identifies the item included in the item information sent from the seller terminal device (3), searches the auction storage device (12) and an external auction item database for items of the same type and similar type as the identified item, and calculates the average price of the items. For example, the auction intermediation device (2) searches for items of the same type and similar type as the identified item recorded in the auction storage device (12) or the auction item database since a certain number of days, such as 60 days, before receiving the seller information, and calculates the average price of the items. The proposed price of the item that the auction intermediation device (2) sends to the buyer terminal device (4) together with the item information is the average price of items of the same type and similar type as the seller item in the seller information. Furthermore, the auction intermediation device (2), which receives information on a large number of buyers, selects information on one or more buyers in order of highest purchase price from among the buyers' specific desired purchase prices and desired purchase prices equal to a multiplier to be multiplied by the proposed price or an additional value to be added to the proposed price.

[0028] Each time the auction intermediary device (2) receives seller information transmitted from the seller terminal device (3), it identifies the product to be auctioned contained in the product information, searches for products of the same model and similar model as the product to be auctioned recorded in the auction storage device (12) or the auction product database since a certain number of days, such as 60 days, prior to receiving the seller information, and calculates the average price of the products. The buyer terminal device (4) has a memory unit that stores a multiplier to be multiplied by the proposed price of the product to be auctioned or an additional value to be added to the proposed price in a changeable manner. When the buyer terminal device (4) receives the product information and the proposed price from the auction intermediary device (2), it automatically transmits the stored multiplier or additional value to the auction intermediary device (2). The buyer can change the multiplier and additional value stored in the memory unit of the buyer terminal device (4) taking into account fluctuations in product prices in the market.

[0029] When the item to be auctioned is a vehicle, the operator of the auction intermediation device (2) appropriately determines the reception time in consideration of the state of the vehicle buying and selling market. After the seller transmits the seller information from the seller terminal device (3) to the auction intermediation device (2), the auction intermediation device (2) receives the seller information from the seller terminal device (3) until a specific time or before a certain period of time has elapsed. Therefore, the auction intermediation device (2) receives the buyer information of the same seller vehicle transmitted from a large number of buyer terminal devices (4). However, after the specific time or after a certain period of time has elapsed after the seller transmits the seller information from the seller terminal device (3) to the auction intermediation device (2), the auction intermediation device (2) stops receiving the buyer information from the buyer terminal device (4). For example, the auction intermediation device (2) can set the reception time for the buyer information from the seller terminal device (3) to be until 6:00 p.m. the following day after receiving the item information from the seller terminal device (3). After 6:00 p.m. the following day, the auction intermediation device (2) can refuse to receive buyer information from the buyer terminal device (4).

[0030] According to the "buyer selection criteria" of the auction intermediation device (2) set by the administrator, multiple buyers advantageous to the seller are automatically selected, and the selected multiple buyer information is transmitted to the seller terminal device (3). In the above embodiment, the economic criteria for the auction intermediation device (2) to select one or more buyer information in descending order of the highest desired purchase price was shown, but in this specification, in addition to the "economic criteria," the term "buyer selection criteria" includes "subjective criteria," "geographical criteria," "interesting criteria," and "buyer number criteria." Based on the buyer selection criteria, the auction intermediation device (2) automatically calculates and selects one or more sellers from a large number of buyers. The "economic criteria" are a method in which the auction intermediation device (2) selects, for example, three buyer (purchaser) information in descending order of the highest desired purchase price.

[0031] "Subjective criteria" is a method of determining one or more buyers, for example three people, by ranking the buying sequence set by the administrator of the auction intermediation device (2) from the top according to the familiarity or intimacy between the seller and the buyer. "Geographical criteria" is a method of ranking one or more buyers from the top of the buying sequence that is closest to the seller on a map or by distance. "Taste criteria" is a method of ranking one or more buyers in order of the characteristics of the vehicle preferred by the seller. The characteristics of the vehicle (product) preferred by the seller are characteristics set by the administrator of the auction intermediation device (2) according to the time, place or era, and model of the vehicle. "Number of buyers criteria" is a method of determining the number of buyers, from one, two, or three or more, up to a maximum of 20.

[0032] The vehicle purchase price sent by the buyer to the auction intermediary device (2) from the buyer terminal device (4) includes the upper and lower limit desired prices for the vehicle purchase desired by the buyer. When the seller selects economic criteria as the buyer selection criteria, the auction intermediary device (2) automatically selects multiple buyers from a large number of buyers based on the lower limit desired price or the upper limit desired price, particularly the lower limit desired price, entered by the buyer and sends the multiple buyer information to the seller terminal device (3), and may simultaneously send the seller information selected as a buyer to the multiple selected buyer terminal devices (4).

[0033] For example, when buyer information on a buyer for one vehicle with a minimum desired price of 1 million yen and a maximum desired price of 2 million yen is transmitted from the buyer terminal device (4) to the auction intermediation device (2), the auction intermediation device (2) presets the buyer's minimum desired price of 1 million yen as an economic standard in the auction intermediation device (2). Therefore, the auction intermediation device (2), which receives buyer information from a large number of buyers for the seller's vehicle, "selects multiple buyer information from the top of the buyer information ranked in order of purchase price higher than the minimum desired price of 1 million yen" of the buyers for the seller's vehicle, and transmits the selected buyer information to the seller terminal device (3).

[0034] The auction intermediation device (2) sets the number of buyers from a plurality of pieces of buyer information selected in descending order of the buyers' upper limit or lower limit desired purchase price according to the seller's buyer selection criteria to one, two, three or more buyers.

[0035] Fig. 2 shows an electrical block diagram of another embodiment of the bidding and auction device (1) of the present invention, and the same reference numerals in Fig. 2 as those in Fig. 1 indicate the same components. The multiple seller terminal devices and multiple buyer terminal devices in Fig. 1 are shown as a seller terminal device (3) and a buyer terminal device (4) of an automobile dealer as representatives in Fig. 2. The operation of the bidding and auction device (1) shown in Fig. 2 is the same as that in Fig. 1. [Industrial Applicability]

[0036] The bidding and auction device and the bidding and auction method of the present invention, which targets one of the following items for auction: consumer goods including vehicles, commercial products, branded goods, tangible property rights including real estate, intangible property rights including patents and trademarks, and services or services provided including moving and remodeling, can be used in all fields of trading where tangible and intangible items are auctioned. [Explanation of symbols]

[0037] 1··bidding auction device, 2··auction intermediary device, 3, 3a, 3b, 3c··seller terminal device, 4, 4a, 4b, 4c··buyer terminal device, 12··auction storage device

Claims

1. The auction system includes a plurality of seller terminal devices into which seller information including an item to be auctioned and a seller's name is input by a seller, an auction intermediary device receives the seller information transmitted from each of the seller terminal devices, and a plurality of buyer terminal devices receives item information of the seller information transmitted from the auction intermediary device, The buyers participate in the auction by transmitting, from each buyer terminal device to the auction intermediary device, buyer information including the product to be auctioned that the buyer wishes to purchase, the desired purchase price, and the buyer's name, which is included in the product information received by each buyer terminal device from the auction intermediary device; The auction intermediary device receives a large number of different buyer information items from the buyer terminal device for the same product to be auctioned, and selects one or more buyer information items in descending order of the buyers' desired purchase prices.

2. 2. The bidding and auction device according to claim 1, wherein the bidding and auction device transmits information of one or more selected buyers to a seller terminal device and / or transmits seller name information to the buyer terminal device of the selected buyer information.

3. The purchase offer price included in the buyer information transmitted by the buyer from the buyer terminal device to the auction intermediary device is expressed as (i) a specific purchase offer price, or (ii) a multiplier to be multiplied with the proposed price of the product transmitted by the auction intermediary device together with the product information to the buyer terminal device, or an additional value to be added to the proposed price; 3. The bidding and auctioning device according to claim 1 or 2, wherein the auction intermediary device that receives information on a large number of buyers selects information on one or more buyers in order of highest purchase price from among the buyers' specific purchase requests and purchase requests equal to a multiplier to be multiplied by the proposed price or an additional value to be added to the proposed price.

4. The auction intermediary device has an auction storage device that stores a large number of used item information, auction item information, and item sales prices, or is connected to an auction item database; The auction intermediary device identifies the product to be auctioned that is included in the product information transmitted from the seller terminal device, searches for products of the same model and similar model to the product to be auctioned in the auction storage device or the auction product database, and calculates the average price of the products; 3. The bidding and auctioning device according to claim 1, wherein the auction intermediary device transmits a proposed price for the product equal to the calculated average price to the buyer terminal device together with product information.

5. Each time the auction intermediary device receives seller information transmitted from the seller terminal device, it identifies the product to be auctioned that is included in the product information, searches for products of the same type and similar type to the product to be auctioned that have been recorded in the auction storage device or the auction product database since a certain number of days prior to receiving the seller information, and calculates an average price of the products; 5. The bidding and auctioning device according to claim 4, wherein the buyer terminal device includes a memory unit for storing a multiplier to be multiplied by the proposed price of the product to be auctioned or an additional value to be added to the proposed price, and when the buyer terminal device receives the product information and the proposed price from the auction intermediary device, automatically transmits the stored multiplier or additional value to the auction intermediary device.

6. 3. A bidding and auctioning device as described in claim 1 or 2, wherein the auction intermediary device receives seller information from the seller terminal device until a specific time or a certain period of time has elapsed after receiving the seller information from the seller terminal device, and after the specific time or the certain period of time has elapsed, stops receiving buyer information from the buyer terminal device and transmits multiple pieces of buyer information to the seller terminal device.

7. the auction intermediary device determines that the buyer information can be received until a specific time or until a certain period of time has elapsed after receiving the product information from the seller terminal device; 7. The bidding and auction device according to claim 6, wherein the auction intermediary device stops receiving buyer information sent from the buyer terminal device outside of a reception enabled time period and transmits a plurality of buyer information to the seller terminal device.

8. 3. The bidding and auction device according to claim 1 or 2, wherein one or more buyer information are selected based on one or more criteria, including an economic criterion for selecting one or more buyer information in order of the highest buyer's desired purchase price, a subjective criterion for ranking buyers in order of the seller's familiarity or intimacy with the buyer, a geographical criterion for ranking buyers in order of proximity to the seller on a map or by distance, a hobby criterion for ranking buyers in order of the characteristics of the product preferred by the seller, and a buyer number criterion for determining the number of buyers.

9. The buyer's desired purchase price includes a minimum desired purchase price and an upper limit desired purchase price that is higher than the minimum desired purchase price.

3. The bidding and auction system according to claim 1, wherein the auction intermediary system selects buyer information in descending order of the buyers' minimum purchase prices according to economic criteria.

10. a step of the seller transmitting seller information including the item to be auctioned and the seller's name from a seller terminal device to an auction intermediary device; transmitting the auction target product information of the received seller information from the auction intermediary device to the buyer terminal device; a step of transmitting buyer information including a product to be auctioned that the buyer wishes to purchase, a purchase price, and the buyer's name from a buyer terminal device to an auction intermediary device to participate in the auction; and selecting one or more buyer information items in descending order of the highest desired purchase price by an auction intermediary device receiving a large number of different buyer information items from a buyer terminal device for the same item to be auctioned.

11. 11. The method of claim 10, further comprising the step of transmitting information of one or more selected buyers from the auction intermediary device to a seller terminal device and / or transmitting seller name information to the buyer terminal device of the selected buyer information.

12. (i) a specific purchase price or (ii) a buyer's information including a purchase price expressed as a multiplier to be multiplied by or an additional value to be added to the proposed price of the product to be auctioned, which is transmitted by the auction intermediary device together with the product information, from a buyer terminal device to the auction intermediary device, and the buyer participates in the auction; receiving, by an auction intermediary device, information on multiple buyers for the same auctioned item from the buyer terminal device; and selecting, by an auction intermediary device, one or more buyer information items in descending order of price from among the buyers' specific desired purchase prices and desired purchase prices equal to a multiplier to be multiplied by the proposed price or an additional value to be added to the proposed price.

13. providing an auction storage device for storing a large number of used product information, auction product information, and product sales prices in the auction intermediary device or connecting an auction product database to the auction intermediary device; a step of identifying, by an auction intermediary device, a product to be auctioned that is included in the product information transmitted from the seller terminal device; a step of searching, by the auction intermediary device, for products of the same type and similar type as the product to be auctioned stored in the auction storage device or the auction product database, and calculating an average price of the products; 13. The bidding and auction method according to claim 12, further comprising the step of transmitting the calculated average price as the proposed price together with the product information of the seller information from the auction intermediary device to the buyer terminal device.

14. providing a memory unit in the buyer terminal device for storing a multiplier to be multiplied by the proposed price of the product to be auctioned or an additional value to be added to the proposed price; the auction intermediary device, each time it receives seller information transmitted from a seller terminal device, identifies a product to be auctioned that is included in the product information; a step of searching for products of the same type and similar type to the product to be auctioned that have been recorded in the auction storage device or the auction product database since a certain number of days prior to receiving the seller information, and calculating an average price of the products; 13. The bidding and auction method according to claim 12, further comprising a step of automatically transmitting the multiplier or additional value stored in the memory unit of the buyer terminal device to the auction intermediary device when the product information and the proposed price of the product are received from the auction intermediary device.

15. The bidding auction method according to claim 10 or 11, further comprising a step of selecting one or more buyer information based on one or more criteria, including an economic criterion for selecting one or more buyer information in order of the highest buyer's desired purchase price, a subjective criterion for ranking buyers in order of the seller's familiarity or intimacy with the buyer, a geographical criterion for ranking sellers in order of their proximity to the seller on a map or by distance, a hobby criterion for ranking buyers in order of the characteristics of the product preferred by the seller, and a buyer number criterion for determining the number of buyers.

Images