Was the original question the right one? is it, why is the Durango so expensive, or should it be, why are other cars so cheap?
I think that when you build them, you see why there is a £200 difference in price between a B44 (for example), and a DEX410, the Durango is full of lovely, very well made parts, whereas the B44, is made about as well as the last BigMac I had.
We all used to buy a 4wd buggys that cost £300-£400 years ago, hell, I remember when I got my first Predator back in 1995, it was £340 then, so for a Durango to be only a £100 more, 14 years later, I think ain't too bad, remember, that just about
everything is more expensive nowadays, even a mid range Astra is £20,000