Dakota question

Hey all you Dakota owners. I'm looking at a 99 Dakota Sport, 4x4, 5.2/318, extended cab, with topper, air, and cruise. It's in really nice shape for its age but the only thing that scares me is that it has 173,000 miles on it. What issues do I need to be looking for, does 173,000 miles sound like too much, and what do you think a fair price would be (I don't want to give the asking price yet becasue I don't want to influence your answers). If it checks out OK, I might buy it tomorrow. Thanks.