Yeah, the guy who owned it then was trying to dump it for dirt cheap because form what I understand he had to leave town. The guy who has it now is trying to turn a little profit on it.
Maybe it's just me, but I'm starting to see a few red flags here -- the guy you are buying from has no real knowledge of the vessel, and as you state is now trying to flip it for a profit. Not exactly someone to whom I'd give my full trust right out of the gate. Some of the answers he's given you seem pretty non-committal, as in "should be good," "I think are OK," etc. Perhaps I'm misremembering your previous answers, but at this point I'd be very wary.
The guy who dumped it first may or may not have done so for the reasons stated, and this could be a pig in a poke.