Is This Allowed?

I think they let it slide for moderns but I do not think they do for this.

I've purchased a few coins under similar circumstances on ebay (e.g. MS64 Washington Q's and MS66 Jeffersons) and invariably, the quality of the coin is below the one pictured. My interpretation is that sellers want to sell coins easily and with minimal effort, so they "commoditize" coins graded from original rolls by selling them 20 at a time on ebay. As we all know, coins within a grade are all unique and not every coin in that grade will appeal to every collector.

I've also noticed some sellers say they won't accept returns of graded coins because a third party has decided the grade. Problem is, the third party doesn't select the photos supplied for the auction and lots of things critical to the appeal of a coin are missed, even with photographs. I don't buy from dealers with terms like these.