Greeting and welcome

I am a noob here but I think it really depends on what you want to do with it/ need it for. Remember, Wagoneers were last produced in '91 (93?) so it will be at least that old (you do the math, I'm drinking!

) - but seriously...
Look at the body/frame for rust, bubbling (rust creeping up from under the paint/for the inside).
Lower miles are OK but not necessarily a reason to buy it.
Look for lower ownership turn around and papers/documentation of work done (all good owners keep all doc's of work done).
If you find one, run a CarFax (.com) report to find the vehicle's history (wrecks, floods, insurance claims on/against it). And, B4 u buy one, have a mechanic look at it. It you're 2 years down the road, start talking to mechanic now and ask the question you posted here.
Keep 'Googling' info on what ever you decide t purchase. Get general info, pros and cons; look for trouble parts that have a habit of breaking down/wearing out faster; and search for replacement parts.
I just moved back to the States and bought a GrandWagoneer

, but forgot a lot of the small things to look out for because the body/frame were in such AbFab condition.
So, to the question of nickle-and-dimes may come into question if you do not do your homework (like me

).
You have more than enough time to research and find one. Just keep scrubbing this forum and you will find far better answers than I am now prepared to give. This site has helped me out a lot!
Cheers!