I had a good eBay story from a few weeks ago.
- Few months ago I buy an Android/Windows 10 hybrid Tablet from China
- I buy a keyboard add-on for it from eBay
- It's not compatible, apparently there are small revisions in each model and the black keyboard will not work with the silver tablet (that I have)
- I didn't want to dick the seller since it was ultimately my fault so I just relist it with a HUGE warning saying THIS WILL NOT WORK WITH THE SILVER VERSION
- Guy Buys it.. 5 days later..
Return opened: Aug-22-17 08:29:20 PDT
Return shipping: buyer pays
Return reason: Doesn't fit(for example: clothing)
Comments: It doesn t fit on my Chuwi Hi10 H64G42170603985. Send me the appropriate one or refund the money.
I ask the guy what color is tablet?
Silver.Did you not read the HUGE warning on ad?
No sorry missed it, still want return.OK.. but you have to pay shipping back and I'm not refunding the original shipping. So it will actually cost you more to return it than if you just keep it. Also explain how I did the same thing and just relisted it.
Was expecting an escalation got this back:

Sometimes it works out. That said I do put 'no returns' on my items and ebay gave me the option to deny return request.. but I assume they can cry and get around that.
Last time this happened somebody bought a ST-V Die Hard cart from me.. he bought it and said it didn't work right.. did the refund tested the board.. it's fine? 2 days later he starts asking questions about the ST-V main board I also had so I just blocked him from bidding.