After owning an 80 for years, I talked the wife into a 100 for her. We bought a 2007 LX470 last year with 107k miles on it. If you drive it easy on the interstate, you can get 17 mpg. Around town it's brutal - she averages 13-14 mpg picking up kids from school, etc. That 4.7L 2UZ-FE engine is pretty legendary in longevity, though.
Land Cruisers are great vehicles. My son even has an 80.