I'd guess 1995. Kind of a pig at 27 lbs. but rides nice. Check stem also for being past the minimum insertion mark, doesn't look too safe to me. If you need the bars that high but the stem needs to drop, get yourself some riser bars.

I wouldn't go above $60, personally.

We've had a 1996 IBOC camping out on the local CL for a while now at $100. I bet I could get it for $70 cash and it's a couple pounds lighter.

Mongoose IBOC Zero-G bike (mint condition)

For MTBs I like to be able to lift the front wheel a couple inches before top tube contact is made.