I have HUNDREDS of baseball, aviation, and military history autographs. This means I can assure buyers that the autographs I sell from my personal collection are genuine. I try to describe my auctions accurately. I don't grade cards.
If you make an offer, and I respond with a counteroffer, I will not accept another offer from you. My counteroffer will always be final. I detest dickering over a few dollars. If it's more, I'll eat it! I value you as a customer.
I want happy buyers, and I will make things right. You want to be treated well, and I want 5-star feedback!