I am talking to a guy that says he can jailbreak my 3GS on iOS 4. I figured it's worth a try at $10 and if it doesn't work I don't have to pay. Even though he said he knows he can do. For another $10 he can unlock it, but if he jailbrakes it can't I just use the UltraSn0w repo code that was announced today and save my self some money?