Looks like BestBuy.com has Bulletstorm on sale for $7.99 for PC, 360, and PS3. While it does not seem to be available for shipping in all formats, you can pick it up in store.
Apparently the catch is that Best Buy won’t honor their own website’s prices in store, so you’ll need to buy the game online… then pick it up in store. Easy peasy.
For some inspiration check out Ash’s review of Bulletstorm right here. You can also check out the parody, The Duty Calls, also released around the same time as Bulletstorm if you like to mock your CoD friends.
[Insert obligatory mention of the phrase “dick tits” here.]