Very good and clear site for best deals. You can search for current best discounts for a game, set price alerts, looks for historical low prices across multiple stores (not just one) etc. Very customizable alerts.
On DLCompare you can find the best deals and compare prices for downloading your game. We help you find the lowest prices and cheapest download games for your PC from download shops like Steam, Direct2Drive, Mmoga, Gamers gate,CD Keyhouse and many others.