| 摘要 |
PROBLEM TO BE SOLVED: To provide a computer system for guaranteeing a future purchase price of a commodity.SOLUTION: A computer system 10 is configured so as to be connected to at least one user device 30 through a network. The computer system 10 includes a processor part 60 and a database part 70. The database part 70 includes a sales management database 71 for managing sales management information about each commodity. The processor part 60 is configured so as to enable information showing at least one future purchase price of the commodity to be displayed in at least one of at least one user device 30 on the basis of the sales management information.SELECTED DRAWING: Figure 2 |
