This is eBay remember, where many of the coins up for sale are at inflated prices, and of course the rating bit for buyers and sellers doesn't kick in until after the deal. So if any item, coin or anything else, is badly overpriced it probably won't sell, so feedback to eBay won't happen unless the item is reported for violating eBay rules. 
 
	I also suppose anyone who pays an inflated price, being ignorant of the proper value at the time, will blindly give a good rating to a 'cowboy' seller.
 
	I have long been watching cartwheels (and other British coins) on eBay and unfortunately such a listing is not out of the ordinary - especially for coins for sale in the US.