So we're looking to purchase an older iPhone 6 after our iPhone 5 finally died. We want this phone just to last us a year until we get new ones. Where is the best/safest place to purchase from? eBay or Swappa? I've never went through Swappa. I'm a long time eBay seller/buyer but the descriptions scare me "...may have screen issues dents or nicks etc but working." So wondering what's our best option?!