Best places to get end of season used Demo Skis?

This year, I spent a fortune on my sons demo skis, and at this point I rather just buy him a ski, then to have to demo yet another pair of skis next year.

He skied the Enforcer 94s while in JHMR and loved them. So I was thinking of just buying those for him. So I am wondering, what's the best places to get end of season used Demo Skis?

The 94s may be a bit too much for the east coast stores, so just wondering what you guys use or just tips of how I could get the best deals.