One would think that all the business that GTA IV is netting them would be enough to make Gamestop happy, but no. In a promotional move that hasn't been done in a while, Gamestop is offering a buy two get one free deal on any of their used games and accessories. So any three used things you've your eyes on at your local Gamestop can now be bought with the cheapest ending up being for free. According to the promotional materialAssassin's Creed and Gears are $29.95 as well, but they note that you should call ahead to find out availability. The buy two get one free deal lasts until Sunday, and the other two seem to be available until the eighth. Happy game-hunting!