It happens. I get things poorly packed from Amazon, too. I ordered a trailer hitch for a car and it shows up on the doorstep bare. No box, no wrapper, just scratched and bent metal. Had Amazon ship a replacement and it came the same way. Finally I got one shipped in a box from the manufacturer.
Anyway, I’m sure you can be made whole on the eBay deal. I have had no problems I wasn’t eventually able to work out. The occasional hassle is a small price to pay for the amazingly good transactions that happen most of the time.