The really high-end ones never sold in very large numbers. Heck, even a 930 Singletrack was a $500 bike, not too many people could afford to spend that much on a second bike. I spent about that much on an early Gary Fisher Celerity in 1990, and that thing weighed a ton. I was happy to get rid of it.
EDIT: Just spotted this Univega locally. looks like people are starting to charge a premium for old steel MTB's. It's a nice bike, but not worth $400, IMO.
https://fresno.craigslist.org/bik/d/...873345457.html