Caveat Emptor is the byword, especially so on eBay where sleazy sellers are the rule, not the exception. I personally don't approve of this particular seller's tactics, which I feel are unethical at best. Nevertheless, a quick glance at his feedback would dissuade me from buying anything from him. My take on his pitch is that only greedy boobs who are trying to get something for nothing would fall for it.
Which would explain why my eBay fees keeps going up every month. I don't want to have to pay the hired hands (watchdog groups) to keep me safe at night against the eBay-diots. I can do all that on my own free of charge