This Jeep has an auto tranny, which I believe is a good unit. This is the same Jeep I have. The transfer case is the oddball NP-207, which has no aftermarket support that I know of. If you ever want more than 4" of lift you will need a new T-case. Also, the carb will need replaced, the stock carb is notoriously junk. You can get a weber for a few hunded bucks or fuel injection for a grand. I hate to throw all the negative points at you, but you need to know.
That price does seem a bit high to me, but like GrandpaJeeper said check out KBB.com, Edmunds.com, and NADA.com to get a good idea of what it is really worth. Any extras might increase the value a little bit.