Part of the problem is the fact Ebay will let a seller PAY to advertise in more than one area. Coins could be listed under the proper country, gold or silver, bullion, relics, antiquities and so on. It makes Ebay money but they then MUST have that auction appear under those lists even if WE do not wish to see it.
Another problem I am having, just as you are, is the mere fact sellers have learned ways to figure out how to NOT sell if they don't get the desired price. Just this week a seller, whom I had won an auction for a glider (plane) for my little boy, notified me he would be refunding my money immediately as most of his shipment was damaged. My answer to that was bull ____! You can't tell me he did not inspect the contents when they were delivered? The fact of the matter, after checking his other auctions for the same plane, was I got a heck of a deal on the auction I won as it was far below his "Buy it Now" price on the same item. Also my auction was offered with FREE SHIPPING so the seller would not make squat. He cancelled because he could and it is as simple as that.
I have had dealers in the past, who lost big money, simply tell me the coin was lost or it would be weeks before it could be located as they were moving into a new building. Yeah right! I insisted on waiting and made that dealer send me the $60 coin I bought for $12. I can play the game just like they do!