Here's a story I had on a recent GM cards eBay purchase.
I picked up a '52 Berk Ross Schoendienst for my collection under the notion of being NM. I could see what I thought was just a print dot and a slight oc to the card. But otherwise it looked great. Fast forward 4 days and the card arrives.
What I thought was a print dot is in hand very clearly a Pin hole. I paid a psa/sgc 7-8 price for this card. So I was Annoyed to say the very least.
I contacted GM and was given a 50% refund (I opted to keep the card). Probably still paid too much as I expect this is now a 2.5 possibly 3 at best.
I did not catch the exit hole on the back while looking at the eBay scans unfortunately.
PS: If you have a true NM copy and don't mind a downgrade I would be willing to trade+$
Even the best Aren't always right.
Lucas Dewease