pretty hard to tell by the pictures, is he going to supply reciepts with dates for work done (piston, rings).
IMO hes using a selling tactic that involves telling you very little about the bike to cover his own ass incase anything goes wrong, suggesting to me there could be some problems.
Things that you could ask him possibly could be
When was the last rebuild done, brakes (pads, rotors) changed, chain and sprockets any leaks in forks it looks like it needs a new rear tyre, exhaust has rust and dent - it could have repairs that are painted over also if any spares are included in the sale. Try to get as much info as possible
Price is . . ok, you could probaby get it for 2k i reckon - put $200 into a tyre and a sticker kit
Or if your a mechanically minded person with some cash to spend lol go for it, once you ride a 2T you wont go back.