Purchase information display system

Abstract

To improve efficiency of article purchase price determination.SOLUTION: A purchase information display system (1) of an article (5) includes: a commodity information acquisition part (2); a purchase price determination part (3); and a purchase information display part (4). The commodity information acquisition part (2) acquires commodity information (22) from an EC mall (6) site and generates a document (201). The purchase price determination part (3) generates a purchase price (31) on the basis of document (201) and registers a new document (301). The purchase information display part (4) displays purchase information (41) based on the document (301).SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a buy-back information display system, and more specifically, to a buy-back information display system that displays the buy-back price and number of items to be bought for an owner of an item. [Background technology]

[0002] Secondhand goods dealers, that is, the buying and selling of goods that have been used and traded once, have a long history. Items traded as secondhand goods typically include works of art, jewelry, automobiles, office equipment, books, and gift certificates. In recent years, a wide variety of secondhand goods are traded between dealers, between individuals, and between individuals at stores known as "recycle shops," "secondhand stores," and "secondhand clothing stores," as well as through internet buying and selling sites.

[0003] Nowadays, even individuals can easily obtain information about second-hand goods on the Internet. Purchasing clothing and toys that have only been used for a short time as second-hand goods and exchanging the used goods for cash is becoming recognized as a rational action for consumers. In particular, goods that have been sold once but are unused (so-called new second-hand goods) tend to have a relatively high transaction price, and are likely to be sold and bought several times. Furthermore, when there is a shortage of new goods in the market or when rare goods attract the interest of enthusiasts, the demand for new second-hand goods can suddenly increase. For example, it is well known that transactions of "new second-hand cars" occupy an important position in the automobile market. Transactions of so-called new second-hand goods are attractive to second-hand dealers.

[0004] The transaction of secondhand goods begins with purchasing an item from its owner. There are no set rules for determining the purchase price. The owner (seller) of the item for sale will look for a buyer who will offer the highest purchase price possible, and may refrain from selling if an attractive purchase price is not offered. Buyers would like the purchase price to be as low as possible, but it is not desirable to purchase many items only to have them piled up in inventory without being able to resell them. For secondhand goods dealers, determining the purchase price is an important manual task that requires the latest supply and demand information and experience accumulated over many years. For this reason, the purchase price of secondhand goods was often decided face-to-face between the seller and buyer in front of the item.

[0005] However, as the use of the Internet to trade a larger number of antiques over a wider area becomes more widespread, it becomes necessary to quickly determine the purchase price of a large number of items. Several methods have been proposed to automatically and mechanically determine the purchase price in antique sales.

[0006] Patent Document 1 describes a system that uses Internet communication to manage the resale of electronic content such as electronic books, video files, and music files. Patent Document 2 describes a trading card purchase price assessment system that includes a section that transmits and receives images of trading cards and compares them with images in a database. Patent Document 3 describes a vehicle purchase system that operates between a purchase shop and a headquarters via Internet communication. Using the purchase price determination methods described in Patent Documents 1, 2, and 3, even buyers without special knowledge or experience can determine the purchase price, and can efficiently buy and sell via the Internet. These methods were developed specifically for the purchase and sale of electronic content, trading cards, and used cars, respectively, and cannot be used for transactions of items other than the target items. Such purchase price determination methods cannot meet the demands of secondhand dealers who want to "take in anything that can be sold."

[0007] In the product distribution system described in Patent Document 4, information on products and their purchasers (users) is registered, the purchase deadline and purchase price of the products are determined according to the user's selection, and the buying and selling and collection are managed on behalf of the user. In the property value display system described in Patent Document 5, the sales information of the retailer is linked with the database of the reuse business operator, and the current value of the purchased goods is displayed to the registered user who purchased the goods at each retailer. The systems described in Patent Documents 4 and 5 assume that the products sold by the company will be resold to a specific secondhand dealer, and can motivate the user to secondary distribute the purchased goods. The systems described in Patent Documents 4 and 5 can efficiently resell the products sold by the company and capture the sellers. However, the systems described in Patent Documents 4 and 5 cannot meet the demands of secondhand dealers who say, "It doesn't matter where the products were purchased, anyone, from anywhere, can bring them in." [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Patent registration number 6087469 [Patent Document 2] JP 2014-215930 A [Patent Document 3] JP 2009-009514 A [Patent Document 4] JP 2023-019463 A [Patent Document 5] Patent Registration No. 7160979 Summary of the Invention [Problem to be solved by the invention]

[0009] Methods like this have been proposed in the past, where purchase prices are announced on the Internet for limited items and sellers. However, secondhand dealers basically want to take in anything that can be sold, from anywhere, at a reasonable price. Today, secondhand dealers are trying to accept purchases from all owners of items that are available on the Internet. In this case, the purchase system described above is not effective, and buyers are often forced to decide the purchase price through direct negotiations with traditional sellers. In fact, today, there are many sites on the Internet that state the purchase price of secondhand items as "negotiable." Such displays may discourage item owners from reselling.

[0010] There is a need for an efficient system that does not limit sellers of goods, but sets attractive purchase prices for a wide variety of goods that are likely to generate profits when resold. Secondhand dealers need a system that determines clear purchase prices linked to the daily changing supply and demand balance in the market, especially for new used goods that have high market value. [Means for solving the problem]

[0011] Therefore, the inventor sought a system that would automatically determine clear purchase prices for a wide variety of items without limiting the item owner and notify the item owner. As a result, by using product information provided by EC malls, the inventor succeeded in showing clear purchase prices to item owners on an almost infinite scale. That is, the present invention is as follows. (Invention 1) The system includes a product information acquisition unit (2), a purchase price determination unit (3), and a purchase information display unit (4), The product information acquisition unit (2) acquires product information (22) from information provided by the EC mall (6) via an API (21) running on the Internet, and generates a form (201); The purchase price determination unit (3) generates a purchase price (31) based on the form (201) and registers a new form (301), The purchase information display unit (4) displays purchase information (41) including the purchase price (31) on a display device (42) based on the form (301). A system (1) for displaying purchase information for items (5). (Invention 2) A purchase information display system (1) of invention 1, in which a product information acquisition unit (2) acquires product information (22) including product identification information (221) and a product selling price (222). (Invention 3) The purchase information display system (1) of the invention 1, in which the product information acquisition unit (2) acquires product information (22) including product identification information (221), product sales price (222), and information regarding one or more selected from the product's dimensions and shape (223), sales record (224), and seller (225) in the EC mall (6). (Invention 4) A purchase information display system (1) of invention 1, in which a purchase price determination unit (3) generates a purchase price (31) and a purchase quantity (32) based on product information (22). (Invention 5) A purchase information display system (1) of invention 1, in which a purchase price determination unit (3) generates a purchase price (31) based on product information (22) and necessary expenses (33). (Invention 6) The purchase information display system (1) of Invention 1, wherein the display device (42) is a terminal device connected to the Internet. (Invention 7) The purchase information display system (1) of invention 1, wherein the goods (5) include one or more selected from art objects, clothing, watches and jewelry, automobiles, motorcycles and mopeds, bicycles, cameras, office equipment, machine tools, tools, leather, rubber products, books, and gift certificates. (Invention 8) The purchase information display system (1) of Invention 1, wherein the item (5) is an unused secondhand item. (Invention 9) The product information acquisition unit (2) updates the product information (22) via the API (21) and also updates the form (201); The purchase price determination unit (3) updates the purchase price (31) based on the updated form (201) and also updates the form (301); The purchase information display unit (4) displays the updated purchase information (41) including the updated purchase price (31) on the display device (42) based on the updated form (301). Invention 1 purchase information display system (1). Effect of the Invention

[0012] The buy-back information display system (1) of the present invention can display a fair buy-back price (31) that reflects the market situation for each of a wide variety of items (5). By utilizing the present invention, it is possible to attract the interest of more item owners. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a reference diagram for understanding an example of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] [Purchase Information Display System (1)] The buy-back information display system (1) of the present invention is a system used when buying and selling an item (5). There are no restrictions on the item (5) as long as it can be legally traded in the market.

[0015] The buy-back information display system (1) of the present invention is used, for example, in the trading of secondhand goods. In this case, typical items (5) are artworks such as calligraphy, sculptures, and crafts, clothing such as Japanese clothes, Western clothes, and other clothing, watches and jewelry such as watches, glasses, gemstones, accessories, and precious metals, automobiles and their parts, motorcycles and motorized bicycles and their parts, bicycles and their parts, photographic equipment such as cameras and optical equipment, office equipment such as copy machines, fax machines, and personal computers, electrical equipment, machine tools such as machine tools, civil engineering machines, chemical machines, tools, and game machines, furniture, sports equipment, musical instruments, fixtures, tools such as electromagnetic recording media and game software, leather and rubber products such as bags and shoes, books such as books and magazines, and vouchers such as gift certificates and train tickets. The buy-back information display system (1) is typically used in the trading of unused secondhand goods (so-called new secondhand goods).

[0016] The purchase information display system (1) is a system that automatically or semi-automatically generates and displays the purchase price (31) of an item (5). The present invention differs from the prior art in that it uses public information from an EC mall (6) as basic information for calculating the purchase price (31). The purchase information display system (1) has a product information acquisition unit (2), a purchase price determination unit (3), and a purchase information display unit (4) which will be described later.

[0017] [Product information acquisition department (2)] The product information acquisition unit (2) acquires product information (22) from information provided by an EC mall (6) via an API (21) that operates on the Internet. The product information acquisition unit (2) generates the product information (22) as a form (201).

[0018] In the present invention, the term "EC mall" is synonymous with "an EC site that operates a virtual mall on the Internet." In a broad sense, the EC mall (6) includes mail order sites where manufacturers, retailers, agricultural corporations, agricultural associations, local governments, etc. sell directly. The EC mall (6) in the present invention is generally an EC mall in the narrow sense, excluding so-called direct sales mail order sites. In order to obtain a large amount of data reflecting the situation in a wide area market, a general EC mall that handles a large number of products and a wide variety of products is preferable as the EC mall (6). For example, as of 2023, such an EC mall (6) is an EC mall operated under the name of AMAZON (registered trademark) or Rakuten Ichiba (registered trademark).

[0019] The API (Application Programming Interface) is not restricted as long as it operates on the referred EC mall (6). The product information (22) is the product traded on the EC mall (6). The product information (22) is data set on the EC mall (6), and is generally a data set of prices and other information associated with each individual product.

[0020] The product information acquisition unit (2), preferably the API (21) used in the present invention, acquires product information (22) including product identification information (221) and product selling price (222).

[0021] The product identification information (221) is typically a product code assigned to a product by the EC mall (6). The API (21) can request all product codes (221) belonging to a specific product category of the EC mall (6) at once. The product selling price (222) is typically a product price set by the EC mall (6). The API (21) acquires the price displayed on the terminal of a user of the EC mall (6) as the product selling price (222). However, in reality, the price shown to the user of the EC mall (6) may include shipping fees and consumption tax. The product information acquisition unit (2) acquires the product selling price (222) in a state linked to the product identification information (221).

[0022] More preferably, the product information acquiring unit (2) acquires product information (22) including product identification information (221), product selling price (222), and information on one or more items selected from product dimensions and shape (223), sales record (224), and seller (225) in the EC mall (6). The product information acquiring unit (2) also acquires information on the product dimensions and shape (223), sales record (224), and seller (225) by linking them to the product identification information (221).

[0023] The dimensions and shape of the product (223) are useful data when purchasing, for example, home appliances or game consoles as the goods (5). The purchase price determination unit (3) described below can calculate the shipping cost, which is one of the necessary expenses (33), based on the dimensions and shape of the product (223).

[0024] The sales record (224) is information reflecting the demand for a product, such as the so-called "popularity ranking" or "best-selling product." For example, when sales record information such as "No. 1 in popularity," "No. 2 in popularity," "No. 50 in popularity" is attached to each product in the EC mall (6), this ranking information can be acquired as the sales record (224) linked to the product identification information (221).

[0025] The seller (225) in the EC mall (6) may be the name of a business or individual registered as a seller of goods in the EC mall (6). Alternatively, it may be that the EC mall (6) operating company sells directly, or that a shop under contract with the EC mall (6) sells at a sales floor on the EC mall (6). For example, the seller (225) information makes it possible to infer whether the goods (5) have already been sold as secondhand goods on the EC mall (6). For this reason, the seller (225) information can be referred to in the purchase price determination unit (3) described below.

[0026] When a secondhand dealer uses the purchase information display system (1) of the present invention, for example, the product information acquisition unit (2) specifies a product category in the EC mall (6) and acquires a product code (221) belonging to the specified product category and product information linked to the product code (221) as product information set 1 (2201) via the API (21). The product information set 1 (2201) is information on items that can be bought and sold as secondhand goods.

[0027] On the other hand, the product information acquisition unit (2) requests sales ranking information via the API (21) of the EC mall (6) and acquires, for example, product codes (221) of products ranked in the top 100 in terms of sales volume over the past month as product information set 2 (2202). Product information set 2 (2202) is a list of items that are in high demand in the market.

[0028] The product information acquisition unit (2) refers to the product information set 1 (2201) and the product information set 2 (2202) and extracts the product code (221) stored in the product information set 2 (2202) and the product information linked to the product code (221) as the product information (22). At this time, the product information acquisition unit (2) has selected the item (5) that is expected to be profitable when resold. Every time the product information set 1 (2201) and the product information set 2 (2202) are updated, the product information acquisition unit (2) updates the product information (22).

[0029] The product information acquisition unit (2) ultimately acquires, for each product sold in the EC mall (6), a data set in which, for example, each product identification information (221) is linked to the product selling price (222), the product dimensions and shape (223), sales record (224), and the seller (225) in the EC mall (6), as product information (22), and registers these as a form (201). When the product information acquisition unit (2) updates the product information (22), the form (201) is also updated.

[0030] [Purchase Price Determination Department (3)] The purchase price determination unit (3) generates a purchase price (31) based on the product information (22). The purchase price determination unit (3) registers the purchase price (31) on a form (301).

[0031] The purchase price determination unit (3) can generate a purchase price (31) for all products for which the product information (22) has been acquired. The purchase price determination unit (3) generates the purchase price (31), for example, for each product identification information (221).

[0032] The purchase price (31) is the price at which the item (5) is purchased from the owner. Basically, the system automatically generates a higher purchase price (31) for items that are expected to be in higher demand when resold.

[0033] The product information (22) that is the calculation basis for the purchase price (31) is generally the product selling price (222) in the EC mall (6). For example, the purchase price (31) is generated by discounting the product selling price (222) by a certain percentage, and the purchase price (31) is linked to the product selling price (222). Sales history (224) can also be used as the calculation basis for the purchase price (31). For example, if a popularity ranking is acquired as the sales history (224), the discount rate of the product selling price (222) is correlated with the ranking.

[0034] The seller (225) in the EC mall (6) can also be a calculation criterion for the purchase price (31). For example, if the seller (225) is a business competing with the seller of the item (5), a lower purchase price (31) can be set. In this case, the purchase price determination unit (3) registers in advance a list (34) of the names and trade names of competitors in the same business, and compares the list (34) with the seller (225). It is possible to increase the discount rate of the product selling price (222) for products associated with the seller (225) listed in the list (34).

[0035] In actual transactions, there are cases where the buyer pays the seller for the goods after receiving them from the owner of the goods cash on delivery. In such cases, the buyer pays the shipping costs for the goods. There are also cases where the buyer cleans, inspects, and maintains the goods he or she receives before reselling them. In order to handle such cases, the purchase price determination unit (3) assigns a purchase price (31) that is a deduction of the shipping costs for the goods, and the necessary expenses for cleaning, processing, and maintaining the goods.

[0036] For example, the purchase price determination unit (3) preregisters a dataset: necessary expenses (33) including a dataset (331) related to luggage delivery fees and a dataset (332) related to work costs. In this case, the purchase price determination unit (3) can determine a shipping fee by referring to the dataset (331) and the dimensions and shape (223) of the product, and add it to the purchase price (31). The purchase price determination unit (3) also calculates the costs of cleaning, inspection, and maintenance by referring to the dataset (332) and the product identification information (221), and assigns the purchase price (31) after deducting these costs.

[0037] The purchase price determination unit (3) may generate the purchase quantity (32) in addition to the purchase price (31). The purchase price determination unit (3) can determine the purchase quantity (32) based on the product information (22). For example, if a popularity ranking is acquired as the sales record (224), the purchase quantity (32) can be correlated with the ranking to increase the number of top-ranking products that can be purchased. The purchase price determination unit (3) can also determine the purchase quantity (32) according to the warehouse capacity of the seller of the item (5). In this case, the purchase price determination unit (3) registers and updates in advance, for example, warehouse capacity data (35) indicating the availability of each shelf, and determines the purchase quantity (32) that is neither too much nor too little by referring to the product dimensions and shape (223) and the warehouse capacity data (35).

[0038] Elements other than the product information (22) can also be added as reference information when generating the purchase price (31) and the number of items to be purchased (32). Other elements include, for example, special receipt conditions due to weather or accidents, and reservations for specific customers. For example, the purchase price determination unit (3) registers and updates in advance a list (36) of items for which it wishes to purchase especially early. The purchase price determination unit (3) can refer to the list (36) and the product information (22) and assign a higher purchase price (31) and / or a larger number of items to be purchased (32) for which it wishes to purchase especially early.

[0039] Therefore, the purchase price determination unit (3) generates a form (301) based on the form (201). In the form (201), when each item identification information (221) is linked to the item selling price (222), the item dimensions and shape (223), the sales record (224), and the seller (225) in the EC mall (6), the form (301) also links each item identification information (221) to the purchase price (31), or links the purchase price (31) to the number of items purchased (32). When the form (201) is updated in the item information acquisition unit (2), the form (301) is also updated in the purchase price determination unit (3).

[0040] [Purchase information display section (4)] The buy-back information display unit (4) displays buy-back information (41) including the buy-back price (31) on a display device (42) based on the form (301). The display device (42) is not limited as long as it is a terminal device that can connect to the Internet. The buy-back information display unit (4) can display the buy-back information (41) in combination with characters, pictures, images, and videos on a display device of a terminal device such as a PC, a tablet terminal, or a smartphone.

[0041] The purchase price determination unit (3) can basically assign a purchase price (31) to all items registered in the form (201). When the purchase information display system (1) of the present invention is used to create a homepage for a secondhand goods dealer, the purchase price (31) can be shown to homepage visitors for all items that the dealer wishes to purchase (to encourage the visitor to sell). Such a display is more likely to attract the interest of item owners than a posting that displays "negotiable". Therefore, it is expected that the use of the purchase information display system (1) of the present invention will increase the probability of successfully purchasing an item (5).

[0042] [Purchase Information (41) Update] In the present invention, since the product information (22) is acquired from the EC mall (6), the purchase information (41) can be updated frequently. In general, the EC mall (6) handles a wide variety of products, and the buying and selling data is updated successively. The product information acquisition unit (2) periodically acquires the product information (22) from the information provided by the EC mall (6) via the API (21), and can update the product information (22). The product information acquisition unit (2) updates the report (201) every time the product information (22) is updated. For example, the product information acquisition unit (2) can update the report (201) every day.

[0043] The purchase price determination unit (3) can update the purchase price (31) based on the updated form (201) and also update the form (301). For example, the purchase price determination unit (3) updates the form (301) every day.

[0044] The buy-back information display unit (4) displays updated buy-back information (41) including the updated buy-back price (31) on the display device (42) based on the updated form (301). For example, the buy-back information (41) is updated daily on the buy-back information display unit (4). In this case, the latest buy-back information (41) updated once a day is displayed on the display device (42). If the buy-back information (41) is updated frequently, the possibility of setting a buy-back price that satisfies both the seller and the buyer increases.

[0045] By using data from EC malls (6) with large volumes of transactions or a wide variety of products, the purchase information display system (1) of the present invention can provide purchase information for a wide variety of items that is linked to the latest supply and demand conditions. This leads to secondhand goods transactions that are highly satisfying for both sellers and buyers, and contributes to revitalizing secondhand goods transactions. EXAMPLES

[0046] Fig. 1 is a reference diagram for understanding an example of the use of the present invention. In this example, the purchase information display system (1) of the present invention is used to display purchase information (41) of unused secondhand goods on the homepage (8) of a secondhand goods dealer.

[0047] The product information acquisition unit (2) acquires product information (22) from an EC mall (6) site. The product information (22) is limited to information on top-ranked products in the "best-selling rankings" of the EC mall (6). The product information acquisition unit (2) generates a form (201) in which the product information (22) is registered. The form (201) lists, for example, the following codes as product information: Product Identification Information (221): Identification Number: A01, F01 ·Product sales price (222): Price ¥a, ¥b · Seller (225): EC Mall Direct Sales (E), Recycle Shop (Q) Product dimensions (223): L (total length, width, depth), M (total length, width, depth) Next, the purchase price determination unit (3) assigns a purchase price (31) and a purchase quantity (32) according to the following rules, and generates a report (301). The purchase price determination unit (3) registers the package shipping cost data (331) of the transport company. The package shipping cost data (331) corresponds to the length, width, and depth dimensions of the package. If the identification number contains an A, get a 40% discount (price x 0.6). -If the identification number contains a C, get a 50% discount (price x 0.5). -When sold by Thrift Stores, the discount rate is increased by 10%. -Subtract the shipping fee that applies to the product dimensions (total of length, width, and depth). -If you rank within the top 10, we will buy 10 items. -If ranked 11th or higher, 5 units will be purchased.

[0048] The information registered in the form (301) includes the following purchase conditions.

[0049] The product with the identification number A01 is eligible for purchase. We will purchase up to 10 items at a price of ¥aa per item. The item with the identification number F01 is eligible for purchase. The price is ¥bb per item, and up to 5 items will be purchased.

[0050] A separately acquired product image may be linked to each product data in the form (301). In special cases, the generated form (301) can be manually modified. For example, if there is a product recall by the manufacturer, a "do not buy" flag is set in the data set of the product, and it is removed from the display output of the buy-back information display unit (4).

[0051] The purchase information display unit (4) operates an application (7) to import the purchase information (41) registered in the form (301) as interface data for the secondhand goods dealer homepage (8). The purchase information (41) is displayed on a PC (42) connected to the Internet. FIG. 1 shows the purchase information (41) consisting of the name, model number (***), image (501) and the like of the item (5) to be purchased, displayed on the PC (42). The purchase information (41) is updated and displayed, for example, daily. [Industrial Applicability]

[0052] The buy-back information display system (1) of the present invention obtains product information (22) from an EC mall (6) site, so it can only handle items that are advantageous for resale as items to be bought. Furthermore, the buy-back information display system (1) of the present invention can set clear buy-back prices (31) that take into account market conditions for all items (5) to be bought. Furthermore, the buy-back information display system (1) of the present invention can streamline the process of determining buy-back prices for secondhand goods, which previously relied on long experience and knowledge.

[0053] Such a purchase information display system (1) will enable secondhand goods transactions that are satisfactory to both sellers and buyers, thereby contributing to the revitalization of the secondhand goods market. [Explanation of symbols]

[0054] 1 Purchase information display system 2 Product information acquisition department 21 API 201 Report 3 Purchase Price Determination Department 301 Report 331 Dataset on parcel shipping fees 4 Purchase information display section 41 Purchase Information 5 Goods 501 images 6. EC Mall 7 Applications 8. Homepage

Claims

1. The system includes a product information acquisition unit (2), a purchase price determination unit (3), and a purchase information display unit (4), The product information acquisition unit (2) acquires product information (22) from information provided by the EC mall (6) via an API (21) running on the Internet, and generates a form (201); The purchase price determination unit (3) generates a purchase price (31) based on the form (201) and registers a new form (301); The purchase information display unit (4) displays purchase information (41) including the purchase price (31) on a display device (42) based on the form (301). A system (1) for displaying purchase information for an item (5).

2. 2. The purchase information display system (1) according to claim 1, wherein the product information acquisition unit (2) acquires product information (22) including product identification information (221) and a product selling price (222).

3. The purchase information display system (1) according to claim 1, wherein the product information acquisition unit (2) acquires product information (22) including product identification information (221), product sales price (222), and information on one or more items selected from the product's dimensions and shape (223), sales record (224), and seller (225) in the EC mall (6).

4. 2. The purchase information display system (1) according to claim 1, wherein the purchase price determination unit (3) generates the purchase price (31) and the number of items to be purchased (32) based on the product information (22).

5. 2. The purchasing information display system (1) according to claim 1, wherein the purchasing price determination unit (3) generates the purchasing price (31) based on the product information (22) and necessary expenses (33).

6. 2. The trade-in information display system (1) according to claim 1, wherein the display device (42) is a terminal device connected to the Internet.

7. The purchase information display system (1) of claim 1, wherein the items (5) include one or more selected from art objects, clothing, watches and jewelry, automobiles, motorcycles and mopeds, bicycles, cameras, office equipment, machine tools, tools, leather, rubber products, books, and gift certificates.

8. The purchase information display system (1) according to claim 1, wherein the item (5) is an unused second-hand item.

9. The product information acquisition unit (2) updates the product information (22) via the API (21) and also updates the form (201); The purchase price determination unit (3) updates the purchase price (31) based on the updated form (201) and also updates the form (301); The purchase information display unit (4) displays updated purchase information (41) including the updated purchase price (31) on a display device (42) based on the updated form (301). A purchase information display system (1) as described in claim 1.

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