That's more like it! There's usually a cheaper way if you put the work into it.
To put the 'low end' into perspective.
Rims- I had looked for those Hutchinson 'Atlas' rims for almost 3 years with no luck whatsoever. It was only after I sold the truck, with complete luck that a guy 8 miles from me had tons of US military surplus (trucks, trailers, engines, wheels, tires, etc) and I went over just to buy some cheap 20x10 steel rims ($80 for 4) to use as stands for my camper jack and saw those Atlas wheels. He had not even listed them as he only had two and figured no one would want them. So I bought them for the guy that bought my 1017. I would not count on the same luck.
Tires- The military surplus tires are super cheap
BUT my friends who have been running those surplus tires have bitten the bullet and paid the crazy price to buy new manufactured ones to replace the surplus ones they had. Too many failures were directed related to the surplus tires age and conditions under which they were stored. Hopefully, infinitely more experienced members like
@charlieaarons will chime in on surplus tires.
So the short version, don't use the high end ($10,000+) or low end ($1,500) as your budget. You will want to check ahead if you get a truck from Europe as it might be cheaper and easier to at least get super single rims over there. And you need to decide between 22.5 or 20 inch rims, a whole different story.
And another tidbit for your search. A German friend of mine who worked as an engineer for MAN
(in Switzerland) for over 30 years bought a
1995 MB1120 for his 'explore the world truck'. When I asked him why he was a 'traitor' and did not buy a MAN, and the fact he could buy any year truck as he lives in Europe, why a 1995? He said he thought that Mercedes has the best support throughout the world, and 1995 was the last year that Mercedes trucks were all mechanical.
YMMV