Ah, the rainchecks are locked by serial number and by store. You would only be able to sell to someone who lives within car range of the store you bought it from. This is MUCH harder to pull off over eBay.
Second thought about the company email: Gamestop may want to prevent employees from telling people about the raincheck program. So your manager may get an email next week saying "Oops, I guess it wasn't cancelled! Sell those puppies!"
There is no such thing as a console war. This is the first step to game design.







