My Daughter won these this past weekend, would love to keep them, but are a bit small for her. These are a great all mountain
twin tip ski $275
TGR has a pretty good guide for setting prices for folks that aren't certified shops. Most private sellers follow these guidelines when setting prices for informal ski transactions. That said, kids skis go for even less because they don't usually keep them for more than one season regardless.
If you want to move them start around $150 even brand new in plastic. It's already March. The 2014-2015 models will be on clearance by the end of the month and keep dropping until October.