PRICE PAID DATABASE METHOD AND SYSTEM

摘要

A novel price paid database, method, system, and computer program product in which checkout items are scanned at a plurality of stores, and a checkout computer identifies the purchased items. The checkout computer determines a price paid for each purchased item. A central computer records in a price-paid database an item identification and price-paid for each purchased items. The central computer publishes the price-paid database. The checkout computer recurrently updates the price-paid database in the central computer with the price paid for each purchased item, the customer identification (if available), the store identification, and a list price for each purchased item.