If you're looking for deals on games, you might want to try your local Goodwill. Besides the stuff people scoop out of their attics and basements, many retail stores including Target, Sears and JC Penny often send overstock items to Goodwill as donations. You can get some serious discounts on new games and game gear.
A Gamertell writer found a $10 copy of Stranglehold, as well as a $20 2GB memory card among several deals at her local Goodwill. The article also offers several hints for picking up bargains.