Commerce System and Method of Controlling the Commerce System Using Budgets for Personalized Shopping Lists

摘要

A commerce system has retailers offering products for sale to consumers. A database is provided including product information corresponding to a plurality of products. A shopping list is provided including a set of the products. The shopping list is evaluated to determine a difference between a budget and a total price of the shopping list. An interface is provided to alter the shopping list or total price of the shopping list based on the difference between the budget and the total price of the shopping list. The commerce system is controlled by displaying the budget and total price with the shopping list to influence purchasing decisions. An individualized offer is presented to reduce the total price of the shopping list. An alternate product is presented to add to the shopping list. A warning is provided to signify that the total price of the shopping list exceeds the budget.