I agree.
If AT can do it, so could ebay, but, as you say, they don't care, hence the number of shysters operating on there.
The Cat D thing could be next to nothing damage wise, or the chassis could be bent, or anything in between, but the killer is resale values, as your everyday punter is frightened off.
Why they don't photograph the damage and repair process, to show future buyers the real situation, I don't know.......or maybe I do!!