Prices UK allows you to quickly search for retail products and compare prices between over a hundred different UK stores.
Enter your search term(s) and Prices UK will do the rest, allowing you to window shop or even purchase the item from the retailer if the price is right!
Note that the more specific you are with your search term(s) the better results you will get, e.g. a search for ps3 controller black is better than just ps3 - and remember that Prices UK only returns products that match ALL of the words you enter, so if you dont get any matching products, perhaps drop a word or two from your search.