One perk is free skiing at Stevens Pass. As far as I can see there are no restrictions.
A pass is $300 if you 13-21 for Mt. High. Assuming there aren't deals for Stevens I know about you'd save ~$180
Maybe this will help some of you.. maybe I'm missing something where this would not be a good idea.
Mt High tickets http://www.mthigh.com/season-pass-sale