He won one of my eBay auctions and bid on several others. He then sent me this message the next day:
I suffer from redacted. I bid on about 50 items i should not have. Redacted. If you can, please refund any money i sent you. I am not even sure what i bought.
Redacted portions are for his privacy. No harm for me other than having to reilst the item, as I eventually got him to cancel the transaction so I got the eBay fee back. Deal with him at your own risk - and it sounds like it's for his own good if you don't sell to him.