Yes, it's against their rules and I'm against this rule. Of course they put any efforts to protect their business, please note Paypal is an ebay-owned company. Their fees are outrageous and it should be a private deal between the seller and the buyer if the latter agrees to pay these fees. If the buyer does not agree, he will not bid. But I understand ebay will lose money this way.Depends on whether or not they see it. I used to try to include additional PP fees in my auctions but that stopped once eBay ended my auctions. It clearly against their rules.
I do not clearly stated "additional PP fees" but someone on this board reported it to ebay, and I know who was.