I bought my FJ 2 years ago for $28k. Reason I picked this one over others is it already had most of what I wanted on it.
$1000 - winch
$1300 - front bumper to hold winch
$1300 - roof rack
$800 - rear bumper
$2000 - 6" lift kit
I then added:
$2000 - wheels (I took the wheels off my 4runner that I wrecked, so didn't really cost me anything, put the shitty wheels the FJ had on them on the 4runner which I sold for parts)
$2400 - tires
$200 - compressor
$100 - emergency battery Portable Jump Starter
$65 - fire extinguisher
$200 - tow ropes
$265 - deadman v2
$100 - big jack
$100 - traction boards
$200 - gas cans and mount
$150 - shovel, pick axe, axe
$300 - light bars
$300 - molle boards to mount stuff
$50 - wood to make bed
$50 - mattress for bed
$200 - tarp that mounts on back of truck for shade
$1000 - all the camping ****, coolers, water jug, stove, table, chars, tents, sleeping bags, cots,
You can easily spend $10k but if you're just doing dirt roads that aren't too hard with some small rocks you could get away with a stock 4runner, tundra, bronco, or a chevy/ford/dodge 4x4 pickup. Add a come along, some safety stuff listed above and some camping gear and you're good to go. You can order broncos with 35" tires which will get you to even more places. Before the FJ I had a pretty stock 1997 4runner that I took off roading. It couldn't do what the FJ can but I picked easier routes and avoided big rocks/drop offs/steps.
https://www.overlandtrailguides.com rates the trails and tells you what you need to get by. Most of the trails they rate are marked "stock 4x4 truck or suv"