The negotiating part bothered me, too. "I used my lengthy pause technique...." If you decide it's no sale because the price is locked in higher than you like, or there is a non-starter like no title, there is no negotiating. Deal's off. To tell someone the problems with his goods and still want to buy them is nothing but insulting.
Now, once the deal's off, and you want to be helpful, say "look, kid, I'm not buying but I know the market. If you want to get a sale, look around at your competition, and know that knowlegable buyers will want a title. Maybe you can get one and then go back on the market. Good luck and thanks for your time." But you can't go back to him.
I happen to know a thing or two about the pricing of certain antiques and collectibles. In the appropriate setting (including away from customers) I don't mind sharing that knowlege with a seller, but I would never do so if I was also interested in buying. It's one or the other: advice or purchase. never try both.
