Agreed...
I had a similar experience with Woodcock Hill a year or so back....he turned from Mr.Nice guy to a smart aZz but...when caught he "returned all the shipping"...still babbling how "it was a good gun for the money"....
If he was being a smart aZZ about how it was a good gun for the money, you should have told him to make sure it stays in his personal collection and that you hope he did not pay too much for it.
It's not like this sport has a hundred million people buying these types of guns everyday. It's a niche sport and one would think dealers would be aware how quickly word spreads if they try to take advantage of someone. If this guy had returned your money on the spot, everyone would be saying what a good guy to deal with.
When things go right for both parties in any exchange, almost anyone is a good person to do business with. It's when things go wrong that you find out who is a good person to do business with and who is not.