Green hides are worth almost nothing now to fur buyers. Good tanned hides will sell or trade at gun shows, and rondezvous. Most folks around here shoot and leave 'em.
I haven't shot any for a few years, but I intend to this winter as we are just over-run with the darn things. I know a fellow who tans them himself so I'll give him any I shoot. I just can't bring myself to leave an animal where I shoot it.