Google Shopping Tools
This is a free set of tools built upon the Google Shopping API, which will give users everything from a valuable insight into competitors listings and prices to finding UPC's your items are missing.
If you'd like to be the first to use and test new tools please contact Tom at tomthedeveloper@googlemail.com
Google have featured this project on the Google Code blog, thank you Google!
View the post here : Google Code Featured Project - Google Base Competitor Analysis