Cheapest Route to Buy an Unlocked Cell Phone?

[Setsuna]

Hey guys, exactly how it sounds. T-mobile contract expiring this month and want to change carriers, but since every single one of them are just as evil as T-mobile, I wish to buy an unlocked phone, specifically, Galaxy Note II, and go with Straight Talk for unlimited everything at $45/month. Does anyone know of how I can get this for the best price possible?

Edit: I only require responses from the superior race, you know who you are. Clayton Bigsby has spoken. (change it Phobia, you spelled it wrong)