My take on this thread is somewhat contradictory. I kind of like the guy's attitude in todays market, he has guts, but there's no way I'd go hear him since I can't stand cranky people.
Selling an airplane is a learning experience just like building and flying it. Some years ago, being completely unlearned to the experience, I was selling a LEZ because I wanted to build a Defiant. There was a guy in Ohio who was very interested, sounded sincere, and could I possibly fly it to his area since he had a full time job at a university and did not have the time to come and look at it. He would pay expenses. So, I blasted off from Connecticut to Ohio one day, got there, he saw it, liked it, and would I stay overnight with them and we could talk closing the deal. Well, it became evident during the evening his wife was not on the same page and they had an augment over the matter. It was a very long night for me and in the morning I flew back to Connecticut having wasted a couple days learning about selling an airplane.
Selling is a natural for some but not for me. I hate haggling or selling something with defects, so I tell the whole story and that's not the way to make money.
Knowing the market is also most important. The price of engines has gone up in the past few years. It looks like another engine like what Jerry has in 7DD will cost at least $4000 more than it did just three years ago. I did not know that two weeks ago. Lycoming may have decided to go after the buck after Superior went away. They pretty much control the market it seems.
Getting back to the thread, the guy who is selling the Rocket believes his machine is about perfect so take it or leave and don't waste my time if you're not ready to deal. Whoever buys it won't have much fun, like share a beer and just talk, it will be all about the airplane, money and nothing else.
I wouldn't go near him no matter what. People are a part of the experience and if there is no person to person connection that has some good feeling, its not worth it to me but that's just me. I don't care that much about perfect toys without a positive human connection.