cantbarsed

If you're looking for DVDs, CDs, books or console games this site makes it easy to compare prices at all the top stores so you can see at a glance which is cheapest and which has stock.
I'm amazed at the variation in prices or new and pre-order titles and now prefer to use their price-tracker which will send you an email when the price drops to a sensible price - you decide how much you're prepared to pay, it's a great free service and a lot easier than trawling around the stores one by one.