Many raw coins are vastly overgraded on
ebay. I've bought from that seller before and while a huge % of their coins are overgraded they are pretty good about haggling and many are BO option. So while 98% of their coins aren't worth looking at, every now and then you can find a reasonably graded one and they are very willing to deal when engaged.
As my posts indicate, I am not an advocate of sellers overgrading and overpricing in order to induce "suckers" to vastly overpay. But that seller has been useful to me anyway. At least I haven't seen evidence of them altering coins like some do. Some sellers are on the "wary list", while others are on the "no fly list".
I do wish more
ebay sellers would be reasonable with grading and pricing, and not waste everyone's time looking at their ridiculous listings. But then some of those sellers sell a lot of coins anyway. If I had a nickel for every buff I've looked at that claimed XF40 yet had no horn at all... LOL I'd have a boatload of nickels.
At coin shows I've offered to sell them one that is better than theirs at $20 less - when I've seen ridiculous grading examples. Funny how they never want to buy!
I took a "replica" gold pendant to a show to sell for "gold melt" last year and saw one dealer displaying the same thing in a case. He was asking "real coin price" for his - which was a blatant attempt to rip-off - the coin was considerably smaller than a "real one". I offered to sell him "mine" at half what he was asking ( which was still way above melt ) and he obviously refused - I told him he knows that it is not a real coin and should be kicked out for such a blatant attempt to rip-off/steal. He ran away and was not a native English-speaker so he even tried the "no understand" thing to deflect. He did have some real gold coin pendants along side it as well. I mentioned it to the guy running the show. Didn't see the guy there the next day.