A good one will bring a couple of grand around here. Be sure to check out the transmission in the thing. They are prone to self destruct if not properly maintained...and can be expensive to fix. I never cared for one but if taking folks with you on a short 4x4 excursion is important, they're hard to beat. If you get a test drive, make sure to take it for a swim and then check the fluids for water.
Here's a list on Fleabay to give you an idea about $$$$