Ah, this makes a lot of sense and is extremely helpful. Thanks a lot. I very much agree that the limited space of the best offer message box prevents a more courteous explanation of these things.
And yes, I will agree with others that the seller didn’t do anything that wrong here. Not the nicest thing to do, sure, but there was no sale yet. Up until the point that the item is purchased, the seller has no obligation to do anything. And next time you buy from STFGaming, don’t send an offer. Just buy it now. Whenever he receives an offer at close to his asking price, he raises the price. That’s just how he operates. Also, his cards are all PSA 6-7 quality – don’t expect to get anything great off of him. He’s like the Troll and Toad of eBay, except there’s a 0% chance of getting a PSA 9+ quality card instead of a 5% chance.