if you're a good shade tree mechanic, dont worry so much
If you're a good shade tree mechanic, don't worry so much. Repairs get expensive only when you "drop it off at the mechanic"
I picked my 00 years ago with 113 on the clock, and Im up to 192 now. There are still some well cared for trucks out there. Mine had never been off road until I added all the goodies. You'll know if a truck has been well cared for my crawling underneath it. First owner was OCD on maintenance-I still have all receipts and the original window sticker in the glove box. Two drive shafts, an alternator, radiator, rear prop shaft donut, throttle body heater once, (second time I did the bypass), plugs/wires, crank position sensor and did AC line seals too. All those repairs are easy, DIY. Lots of how to out there for these trucks, and still great sources for new and used parts at reasonable prices as well.
But, I do have a back up, which is my 01 DII, $1100 blown head gasket special with only 86K. Did the head gaskets myself for less than $700 with parts from Will Tillery, AB, Marty Powell, et al. We're up to 102K in it now with no major issues.
again, if you're a decent home mechanic, got a code reader and the internet, you can enjoy these trucks without that much worry.