If you're short on money and have some extra games lying around, you can trade them in at your local GameStop for an additional 20% store credit towards the purchase of Street Fighter IV.

Offer is only good until Feb. 22, 2009 and you MUST use the store credit towards the purchase of the game.

If you'd like to scope out more details, just hit GameStop's weekly deals page here.

Also word on the street is Game Crazy is offering this same deal, kudos to Robbie for the heads up.