I waited in line at my local Apple Store this morning to try and find an AT&T iPad for my mother-in-law. I was second in line. The guy behind me was Asian. When the manager came outside to hand out tickets, she refused to allow the guy behind me to purchase any iPads because he had purchased two yesterday. They should have done this all along, however, it is probably difficult to prove that a person has previously purchased iPads when they pay in cash and can rotate to different stores.