Abstract: 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.

Abstract: 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.

Abstract: A commerce system has retailers offering products for sale to consumers. A plurality of bids for a search criteria are accepted. A winning bid for the search criteria is selected from the plurality of bids. Value message content related to the winning bid for the search criteria is accepted. An interface to submit a search query corresponding to the search criteria is provided. Search results corresponding to the search query are collected. The commerce system is controlled by displaying the search results and value message content to influence purchasing decisions. A market segment is applied to a scope of the bids. The search criteria is accepted with the bids. The winning bid is selected based on a value of the bids. A database containing product information is provided. The search results corresponding to the search query are collected from the database.