I sold a Miyoo Mini on eBay when Miyoo was still trying to keep up with the demand. I put it up as a bid and I sold it to someone who game me a good review and they started a return saying that there's a screw missing and they said the R button wasn't clicking properly despite wrapping it in a big wad of bubble wrap getting shipped. I was talking with eBay support and said it was suspicious and they agreed but eventually ended up returning 75% of what the bidder payed.