$350
I am selling my Trek MultiTrackbike. It is great for getting around campus, but also works as a gravel / light trail bike. It rides excellent on roads, bumpy sidewalks, and even lose dirt.
The bike itself is in great condition with the chain and inner tubes all changed within the last year. The bike has been tuned before sale. Most important, the seat is also wide and comfy.
The seat post is adjustable, and the frame should fit riders between 5'7" and 6'4" or so, but you can try to ride the bike before purchasing. This is a mid-1990s steel frame. With proper care, it has (and will continue to last) forever. A great bike to have around campus!
Resale for these bikes in pristine condition is anywhere from $500-$800, asking $350 following the tune-up and the excellent condition of the bike.