SGV said:
$2000? Really? Hmmm.
Edit:
I saw this:
http://maine.craigslist.org/cto/886965907.html
Then remembered something and looked up this:
http://autos.msn.com/research/vip/Spec_Glance.aspx?year=1991&make=Toyota&model=Land%20Cruiser&trimid=-1
1991 Toyota Land Cruiser
Fuel Economy
(more)

Egads!?!
City (mpg) 12
Highway (mpg) 14
That looks like a pretty good deal if the truck is in good shape. It is an earlier 80 series with the 3FE inline 6 engine. They are very good trucks, a little slow but very reliable and overbuilt. A lot of people criticize the 3fe for lack of power, being gutless compared to the larger inline 6 that comes on the 1993-1997 cruisers. But, both trucks are slow, and the larger 1fz does not have much more power. And there are some definite benifts with the 3fe-iron head and block, ability to use a variety of transmission (h41, h42, h55f manual transmissions), and no head gasket issues that some of the 1fz's had. My 3fe in my FJ62 feels just as fast or faster in some ways than the 1994 I had with a 1fz. However, in hot weather with the fan clutch locked in and the A/c running, there is a noticeable difference in terms of power between the 3fe and 1fz. But all in all, not bad.
And yes, gas mileage is not good for land cruisers.
But if you want a reliable, low cost to maintain vehicle for expedition type stuff, the land cruiser is pretty much perfect. Only issue is the gas mileage, but the other vehicles you are looking at do not get that much better.
As far as the 2000$ cost to baseline a cruiser, I think that figure is accurate if you have a dealer do the work. But not if you do any of it yourself. Most of the stuff is very simple to do too.
You can count needing some front axle seals, pretty much all of the older ones leak now. This is not a big deal unless its gushing gear oil out the knuckles or something.
Other than that its just basic stuff like fluids, brakes...
You also asked in your original post about the reliablity of the older 60 series cruisers... they are basically bullet proof as well, maybe more so. Although now they will probably require a little more work off the start to baseline than the 80 series, but just because of the age and the fact that a lot of owners neglect them. There is one guy on ih8mud.com that has an fj60 with over 430k miles with original engine, transmission, transfer case, axles etc etc.