Ethics question?

No comment.

Seriously, I just stay away from that kind of potential trouble.

I once bought a Schwinn Varsity for $10. It looked like it'd been locked to pole or rail or something for a long time, too. I rode it for 4 years, so if it had that kind of value to me, it may well have been liberated just for the sale. At the time, I didn't worry about it, being 21.

Now, I would.