Have you looked at it yet? Whats the NADA or Blue Book say about it? These should be your first step. Know what the vehicle sells for, based on condition, in your area. Then inspect it and verify the condition the seller claims. Based on this: http://www.nadaguides.com/Cars/1998/...D-4-Cyl/Values
Based on the values specified, the actual sale price can be from about 3200$ to almost 7K. Could be more, could be less *depending* on what the *real* condition of the Jeep is. Only way to know that is to *look* at it! Cus you ain't taking the sellers word for sh*t, right? Frame might be rotted to hell and then I wouldn't give him 1200$ for it! Or, maybe he doused the frame in motor oil when he bought it new, kept it in the garage, never drove it in the rain, never put the top down, never got a speck of dirt or rust on it and kept it in showroom condition and then it might be worth as much as 10-12K!! So...only way to know is to look. Armed with the above info and the guide, you act accordingly....Good luck! I am searching for another Jeep now, after being Jeepless for the last year. Big Fun, shopping is!