A working Bowflex TreadClimber TC5000 that looks lightly used. We bought this off Facebook Marketplace a few years ago, and it just never met our needs. Specifically, it's not great for running. It is designed to combine walking and stair climbing.
This thing is smaller than most treadmil-like devices, and it manages to be much heavier, so you'll need to bring help to get this to your truck.
Bowflex TreadClimber TC5000 (Adelphi near mill 20783)
This offer has been gifted to someone and is no longer available.