I've bought two used Samsung Galaxy S4's on ebay. One that would work with Verizon, and one that would work with At&t. Would do it again in a heartbeat. Look for a power seller that has good overall feedback, offers a good return policy, and at least a 30 day warranty would be a plus too. Make sure you read the auction details very carefully. The auction should clearly state the condition of the phone, what network/networks the phone can work on, and that the phone has a clean esn. A clean esn is a must have. It normally means that the phone and it's previous owner are not currently under contract, nor has it been reported as being lost/stolen. Hope this helps.