Purchase price calculation method and purchase price calculation system

摘要

The present invention is a purchase price calculation method for notifying the seller of the purchase price of a used record, and when the used record jacket image transmitted from the seller's mobile terminal 2 is recognized and its model number can be recognized, The purchase price is determined based on the information regarding the sales price of the record and the quality information that can be recognized from the jacket image, and the price is notified to the mobile terminal 2 of the seller. On the other hand, when the model number cannot be recognized, the seller's portable terminal 2 is inquired about the model number. When it is determined that there is no model number, the determination result is notified to the mobile terminal 2 of the seller.