Hi Jason,
Yeah. Probably sold. They were cheap but definitely had some very tough miles on them. There has been a few good buses for sale recently though. There is a green FG84 day tour bus that I know only pottered through a tight rain forest track most of its life. So very low k's and was well maintained. Saw that on trucksales a few weeks back. Also there is a couple of Fg84 buses coming off the pipeline jobs that aren't too bad. .......they've been at auction and were passed in at $90k without meeting reserve...... but I know of two beautiful 2013 Isuzu 4x4 buses being sold by a drilling company that are exceptional. One is still new and the other only has very low kms.....parabolic suspension, single wheels, walk in rear boots, long range tanks, winches, dual spare wheels, bullbars, big spotlights, full mine spec, etc..
If you only want to spend $50k or $60 k then most of the second hand buses in that bracket are pretty tired. I've never seen an old bus that I'd consider buying that was under $80k or $90k ........but some of the really good deals that I've seen are up in the $125k to $150k bracket if you can stretch that far.