What's the cheapest I can get an unlocked 4?

[Virgo]

Since the 4S is lame and I want an iPhone anyway, I figure I should get an unlocked iPhone 4 now that prices will be lower. I wonder how cheap I can get one to use on T-Mobile? I wanna spend less than 350 hopefully..

 

[miles01110]

Highly doubtful you'll get one for $350. Definitely not a brand-new one; your best bet would be craigslist.