I'm gathering information that alot of users that bought the MBA were able to exchange their MBA for a different model whether that is more ram, bigger screen..etc etc. Did you pay a restocking fee? I'm curious if I just go to the apple store and buy the 11inch and just see if it fits me more than the the 13 inch. The only way to know is have it for about a week. But paying a restocking fee would make me not want to do this. Thanks in advance.