My Razr Maxx HD is f'ed up (screen is broken) and I've been wanting a Maxx for a while. The $400 for the Moto X is appealing, but I really want the Maxx. I need that 3500 mah battery! I have like $450 in Amazon GCs, but unfortunately, the Maxx is 700$ on there. What's the cheapest way to get this phone off-contract?