Dmax trivia as I threw in the towel after I wrecked my 6.5 then found a Dmax for 5k. Oil change 3 gallons($10-$20/gal), tranny fluid change 2 gallons transynd at $35 a gallon+$8 spin on filter(Allison), fuel filter about $36, injector just 1 is anywhere from $160 to $300+ each, mileage still around 20mpg give or take 2, rear differential 4qts at $9 each, maintenance cost are pricey. Try to get a 04.5 or up if you can, they say the injectors don't fail as often and are easier to replace. I got an 02, passed through your area driving it home. 1740 miles in 34 hours and never a problem.
Good side, intercooler is stock, runs a 100mph and you don't realize it, yep radio cranked looked down and I was cruising at 98mph and barely had the pedal pushed. The power, acceleration is no comparison to my old 6.5. She jumps up to 70 as quick as you get her straight on the ramp, add a $700 adjustable on the fly programmer and you got 500hp under your foot. Mines stock and when she revs up you feel it wanting to jump out from under you. Good luck on your search, run the vin on here before you buy one and see what the history is.
I do love my Dmax even if I am gonna drop over 1k on injectors in the near future.