Swappa is taking on eBay for re-selling Android devices... http://swappa.com
Focus. Only fully functional, ready to activate Android devices are allowed. Anything else is blatant fraud.
Simplicity. Only have one form to fill out to sell a device. No auctions. One price. A device is sold only when the buyer pays.
Service. An actual person checks in and helps on almost every transaction.
Price. Flat fee ($10), paid by buyer, only when a device sells. Sell a $300 device and save about $20 in fees.