So I'm about to sign up with AT&T post paid plan (would love Tmo but I need better coverage and I need more data than AT&T prepaid or Straight Talk allow) but I want a Nexus. I'm going to therefore buy the iphone with the new plan subsidy and immediately resell it for a $300 profit that will essentially pay for the Nexus. Anyone else doing this? Any issue I should be aware of?