I have no dog in this fight, but why is it your concern?
Eric had and has all the resources in the world to determine the market value of anything he is interested in buying. He is, to the best of my knowledge, a grown man who can make his own informed decisions. Eric went to one of the most trusted collector-dealers out there to make his purchase and you are second guessing the process and the fairness of the deal based on what?
The only valid reason I can see for anybody to jump in here was if Eric had voiced concerns over his purchase. He has not. To the contrary, he was elated with his purchase. So why rain on his parade?
I only see "unscrupulous" defined one way;
http://www.merriam-webster.com/dictionary/unscrupulous