I had a similar experience but not bike related. Rather hilarious as the buyer / top bidder claimed to be a lawyer of which doesn't mean squat in my world.

In brief. A limited ed. made in Germany, brand new, complete, in the box + paperwork Schuco Auto-union tin car -perfect original and cherished condition. Buyer signed as received and after a few days I had followed up and thanked him! No feedback yet was posted.

The buyer only then replies was so dissatisfied and claimed it was a fake + repainted, even after he checked with his blacklight?? LOL

I was quite taken back by the statement and knowing personally acquiring the item direct from the company. Regardless, I offered for him to return it, I'll even absorb all the fees but only reimburse after receiving it and the same condition it was delivered.

Buyer became outraged and threatened lawsuit....yada, yada. Too mental beyond further explanation. Of course a record of comm. was with ebay. Anyways, the buyer declined my gracious resolution and kept the item. He also gave me a negative feedback. It was such a longtime ago, but think ebay took care of the neg. feedback.

What a nutsack whoever he is.