for the price you will pay for a 4th gen 4runner you can pick up a nice 100 series lc, and have way more vehicle... i would not even consider the 4th gens -not that they are bad rigs, but for the price ill buy a 100 series all day long and have a vehicle that has much nice fit and finish, better quality components, is more robust, and rugged and has more room. the thing that keeps the 4th gens price up, is they are newer, but even so they are not as nice on the inside(or outside imo). but they are gonna start at around $10k and go up from there.
as far as that 4runner, idk i dont think they want to much for what it is, but its not a great deal. if it had the rear locker and some records then yeah it would be a good deal. but its a 12yo suv with almost 200k, and no extras, no leather ect. but 3rd gen 4runners hold their value well. some things id look for on it is rust, even though its in AZ, it could of come from the midwest or back east, so rust could still be an issue. if you have the VIN you can go to a dealer and have them look up where the truck was sold originally and if and where and what services were done to it at any dealer in the US. if some midwest or back east dealers pop up id be leary of it...