Abstract: A client application monitors web pages visited by a consumer and determines if the visited web page is product oriented and, if so, then contacts a product server to automatically retrieve and display corresponding product purchasing information if available in product centric database. However, if the web page is not found in the database, it and its product information is added thereto. The database is created by a product information gathering web crawler and a second web product price crawler using the harvested product information to find prices corresponding to the product on unvisited web pages.