Ebay has become a joke on this issue. Take
https://www.ebay.com/itm/297545160111 and all this sellers other coins.
Every single one is a counterfeit but here's Ebay's response even to
reporting What happened:We looked into your report and didn’t find...
The scamming buyer likely knows that the return shipping you'd be out is
more than the phones costs so expects you to say keep the item while
refunding them a very common type scam for scamming international
buyers. Unfortunately that's probably the ...
The gift card you purchased through a third party could have been bought
through fraud. In those cases yeah the vendor will freeze the card once
they are notified fraud has occurred so they aren't ending up double hit
with a CC charge back and losing...
So it was 'free shipping' to the buyer but how did you pay for shipping
the item? If you paid for it through Ebay shipping they deduct that
money from your eventual payment...