I bought a phone on swappa. The buyer sold me a clean ein iPhone but it was a prepaid variety that doesn't work on any normal network. The buyer admitted to this and was going to pay me then back out. Swappa told me to take it up with eBay. All the seller had to do to win the dispute is lie to PayPal and tell them I "Altered the device" Its just a he said she said thing. I informed swappa of this and they refused to do anything about it.