AT&T had the iPhone 4S full price at $649 and right now, even with the iPhone 5 coming out, the full price at Best Buy for the 16GB model is $699?? I wanted to get my iPhone 5 through Best Buy... Heck I have this whole plan set up, but are they going to charge more than AT&T?? If so why? Can't I just tell them that AT&T charges this.. Etc.?