AT&T iPhone 3gs & iPhone 3g trade for a AT&T iPhone 4 or 4s in Baltimore, Maryland For Sale

I have a AT&T iPhone 3gs its Jailbroken I am using it now I have only had it for a few weeks & a AT&T iPhone 3g the screen is cracked the power button & volume buttons do not work but it still comes on & works great Im looking to trade them for an AT&T iPhone 4 or 4s if you are interested I can send you pics of them both no problem at all