Sell your old gadgets on Amazon.com

Amazon.com has introduced a new program that will buy back your used electronic gadgets.   Anything from MP3 players, cell phones, cameras to GPS units and more.  You tell them what you got, the condition it is in and they will give you a quote on what they will pay for it.  You print out a free shipping label and send it in.  Once the item is confirmed to be in the condition you said, a check is sent to you.  Seems quite simple, well it is.  Also, Amazon is not the first.  Try Gazelle.com.  I have and the process is that simple and it works.