Okay... so I know everyone is freaking pre-ordering and oozing over their new phones, but hopefully someone can help me out real quick. I wanna sell my iPhone 4S 64GB (AT&T) to offset the cost of this new phone. Craigslist is looking 500-600$ range though I'm not sure if people are buying. Does it make a difference if my phone is "unlocked"? I have it jailbroken. I'm sure I can unlock it if that makes it worth more. If not then I'm sure another AT&T user could just switch out their SIM correct. I have all the originals. Also the back is brand new (Retro, not a normal colored back plate) Is 500-600$ a good price to try and sell it at? I was gonna start at 600. Any other websites maybe? I was looking to keep it local but I suppose I can ship if necessary to get someone to pay that much. Thanks!