Ebay - Am I Missing Something?

Please explain what exactly constitutes "over pricing" of any commodity. Also as to third party grading , indeed a "Tale Of Two Cities " so to speak. In Europe ( I travel to and buy extensively ) third party grading is no where near as accepted or in common use in the coin markets of say The UK or Germany. It is well over 80 per cent raw coins.
In North America especially the USA and to a lesser extent Canada , one would get eaten alive selling raw coins. Third party coin grading is a widely accepted part of the coin market. Simply put if the coin is not slabbed in the North American market , you WILL NOT get the best price for your better coins. That is a Market fact.
Let me ask this to our European friends who DO not slab coins...............Why do you think so many knowledgeable North American dealers frequent the London Coin Fair, the Fairs in Birmingham and the continental coin fairs?
If you do not get your better stuff slabbed you are leaving way too much on the table!