Google Product Search

Google's shopping search engine uses the power of Google search technology to help shoppers find the items you want, both online and in nearby stores. Product Search users can sort results by price or store location, see product and merchant reviews, specify a desired price range, and view photos. Product Search accepts data feeds directly from merchants to ensure that product information is accurate and up to date. Because we do not charge merchants for inclusion in Product Search, shoppers can browse categories or conduct searches with confidence that the results provided are relevant and unbiased. As with many Google products, Product Search displays relevant advertising separately from search results.

http://www.google.com/products