I came across this site the other day...
Buy/Sell Used Outdoor Camping and Hiking Equipment at GearTrade.com - #1 in Outdoor Gear Exchange
Yesterday I picked up some 2012 burton prophecys in nice shape for 90 bucks shipped - from backcountry.com!!!
People sell used and new equipment on here. The best part is backcountry.com clearances out stuff that people returned without tags ect at crazy cheap prices. The stuff backcountry sells seems to have free shipping.