Radioshack.com offers trade and save. You can view the value instantly based on what you rate the condition of the device. I did iPhone 4 16 GB and I would get more for it if it was in just "Working" condition or 2 stars. Then I would if I sent it to them in "Mint - Like New" condition or 3 stars. Meaning if your phone looks great you should beat it up a little before trading it in with Radio Shack (at least iPhone 4) Check it out. Link below.
http://radioshack.cexchange.com/onl...ItqUUKG7DqralpXrVoH2BJyoA7SESj+kXCj1ma82j4A==
http://radioshack.cexchange.com/onl...ItqUUKG7DqralpXrVoH2BJyoA7SESj+kXCj1ma82j4A==