The key is to sell before the next iPhone is announced.
I was able to get $650 for my 64GB iPhone 5 on eBay just a couple days before Apple's September 10th event. Maybe at this point it would just be easier to give it to Apple for credit towards the 5s.
$650 "net" price on eBay? Even after fees and shipping?
When people mention eBay prices they should always give us their real after fees and shipping costs prices.
$650 could be a lot closer to $580 after fees.