Seems to me, that the seller (obviously) had waaaay more $$ invested in that car...
than his listed asking price. Maybe, it's full of bondo and rust ( I doubt it)...or maybe he is currently going through a divorce, or other extenuating circumstances that forced him to sell it? We don't know. If it is a solid, clean car, I think he under priced it.
It does look like a great car btw... I'm sure the new owner, will enjoy it.