Diesel Bombers - 1997 F350 buying advice

Hey guys, i've been looking into getting a powerstroke for a while now. I found one for sale that I'm interested in. It is a 1997 f350 crewcab powerstroke with 155miles. The body is in near perfect condition, only a few small dings. The guy claims that everything listed is new or rebuilt: transmission, steering box, column + electrical, rad, batteries, bilstein shocks/bushings, entire glowplug system, cai, cam sensor, firestone airbags and a starter. He originally listed it for 11000 but I watched for a while and he dropped it to 10000. After talking to him he said he could sell for 9500. I'm just wondering if this is a reasonable price? It has not been chipped and the exhaust is stock. Also what are some other mechanical issues I could run into?

Thanks