I Bought mine for $2000 (1995) with no Aircon, and due to where I live (In the middle of WA in the desert, with 45-50 degree days in summer) he dropped his asking price from $4500 to $2000 just to get rid of it.
I found a wire rubbed through to the blower, blown fuse and nothing else.
Re- insulated the wiring, replaced the fuse, and the Aircon works a treat!
Mine has 200,000km's too, but no engine issues, runs like a dream.
I have done a full service, every oil, fluid, filter, belt, hose etc has been changed (almost...O2 sensor on its way)
Replaced most of the engine sensors, overhauled the brakes, doing the rear diff seals this weekend.......Not because it needed everything above done, but im just someone who prefers to take every precaution so it is reliable.
Cost for the above was $2000 for the car, Approx $800 for everything else....now I'm happy its as reliable as a new car...
After market mod's are getting done too...and they are cheaper than most...so you save again.
Check out my thread for the build so far...
http://www.ausjeepoffroad.com/forum/...59#post1325459