I'm a bargain hunter and only buy when I find great deals...of the current 4 boats I have; 4 were in "like new condition", one was well used but I have only spent $2500 total on just the rubber. (one 14' NRS, one 14' Hyside, 1 sea eagle ducky and one 10.5 ft cheap chinese bucket) and this boat seems just perfect for what I would be looking for at this moment, so I would have been interested too.
Lets say I didn't see what zbaird said.
Sounds like the boat doesn't hold air...completely unknown history, sight unseen (in person) although the pics look good...but who knows when they were taken or if that is even the same boat?
Pre-puncture I probably would have driven 2-4 hours roundtrip to go see the boat and be prepared to spend as much as $600 if I really liked what I saw. But would be more comfortable in the $400 range considering it doesn't sound like it holds air well.
Post puncture I might go see it if it was a short drive and I might-MAYBE pay $250 for it if I still liked what I saw in the boat with all the other tubes and thwarts inflated, good valves etc. $200 would be a more comfortable price for me though.
BUT, considering what zbaird said....don't bother, or maybe bother if the guy is close and will sell it for $100-$150.