Abstract: A price information presentation system that easily notifies a shopping customer that his/her buying price is lower than one when buying at another store to improve the satisfaction level of the customer. The system includes a price database of other stores, a buying information input section, an obtaining section of another store's price information that refers to the price database of other stores and obtains the selling price of the same article at another store as the article that the customer bought, a price difference calculating section that calculates a price difference between the selling prices of the article that the customer bought and the selling price at another store, and presentation sections that present the price difference calculated by the price difference calculating section to the customer.

Abstract: A price information presentation system that easily notifies a customer who did his/her shopping that his/her buying price is lower than one when buying at another store to improve the satisfaction level of the customer. The system is constituted by comprising a price database of other stores, a buying information input section, an obtaining section of another store's price information that refers to the price database of other stores and obtains the selling price of the same article at another store as the article that the customer bought, a price difference calculating section that calculates a price difference between the selling prices of the article that the customer bought and the selling price at another store, and presentation sections that present the price difference calculated by the price difference calculating section to the customer.