But Jim, the point is that Lonestar was the one to halt any future business transactions, and essentially halve the amount of "comic money" he was owed. No matter how you feel about the OP, what happened is dead wrong and highly unethical.
I doubt you would side with Lonestar if you had traded in some CGC books worth $1K+ GPA, and then Buddy immediately booted you and offered a "my way or the highway" $500 cash offer for the books (which they'd already sold for $1500).
If not, then send all your HG CGC picture frames over here and I'll pay you half-price for them.