Sold 2 Iphone 4 about two weeks ago and I have not received the money yet. Amazon let's you track the device under your account. In ebay there is no trace that you ever sold the phone. Stay away from these services. It is better to just giv away the phone to charity that sending it to these idiots. I am so pissed for sending a perfectly working phone, that never let me down for 2 years to these idiots. Stay away. Do not trust the post saying that it works. THe post are written by them to lure idiots like me. STAY AWAY IF YOU DO NOT TO WAIT UP TO 30 DAYS TO RECEIVE YOUR MONEY (edited) UPDATE. TODAY I JUST RECEIVED 200$ from the ebay instant sale. Although it took a long time to get the money, they sent me the correct amount. Amazon sent me the phone phone back after 5 days. the phone was in the exact same condition as the one I sent to ebay. As per this experience I recommend EBAY over Amazon.