eBay must know this person had been bidding for years and not buying more than the occassional penny book. They do not escape a contribution of blame.
Suthrnjewl, I passed eBay support the AuctionBytes link about CBB's and that must have clinched it, thanks for the link and sharing your grief so I could manouvre carefully

I hope Suthrnjewl's posts and mine will help others deal with these parasites.