4. The method of claim 3 wherein the URLs of the plurality of vendor sites, and the extracted price and product information which are stored in the database are updated periodically.
4. The method of claim 3 wherein the URLs of the plurality of vendor sites, and the extracted price and product information which are stored in the database are updated periodically. 5. The method of claim 4 wherein the URLs of the plurality of vendor sites and the extracted price and product information, which are stored in the database, are automatically updated daily.