You probably won't like my response but... I've been scammed on ebay before so the only place I sell my phone to is Apple. Wife and I walked into an Apple Store 7 months ago and sold each one of our iPhone 6+ for $300 each. Sure, didn't get as much as we would somewhere else but... money was instantly put onto our card. Best of luck selling your phone! (Hopefully someone responds with a good place to sell).