Beast in Diesel form..

I seen used some used truck dealers in my general area asking almost 18k for diesel pick-up trucks with over 150,000 miles on them and maybe have some rust or dents.
A couple years ago I was looking at a 1999 or 2000 Dodge Ram 3500 with low miles and they wanted 20k for it and was in ok shape,but not as good as my '01.