I have a 2000 LX470. I agree with the others, plenty of life left in it. I drove mine myself for about a year and enjoyed it quite a bit. Then passed it down to one teenager for high school and he took it out of state to college for a year. I got him a truck this summer and now his little brother is driving the LX470 in his high school years. Last time I looked we had 280k on it. It’s been into Land Cruiser Specialist a few times for various things, timing belt, an alternator, some brake work, etc.. I trust those guys quite a bit. They keep reassuring me that it’s nowhere near the end of its life.
I would say that at this age it’s becoming kind of a niche vehicle and anyone you sell it to will be fairly familiar with them. I don’t think you’ll hide a timing belt due. You having some other work done on that besides the timing belt? I know with inflation things are costing more, but when I did ours may be a year and a half ago I think we paid $950 for it.