Any car with 100,040 miles is not a good buy. It might be good, if you can't find anything else, but I certainly wouldn't pay $16,000 for it. I am 71 yrs old, and are driving two vehicles 13 years old, and neither have 100,000 miles on them!! Someone has really driven this vehicle, being only 8 years old!! I would use Google, and search for this vehicle for some prices also!! Good luck.
Those miles aren't bad it's about 12,500 a year that is about average. The Durango gets very crappy gas mileage and has a very small tank so if you plan on towing you will hit every gas station along the way. I actually own a Durango would not buy again. 16,000 is too much that's my two cents.