If you think you'll be out here for more than a week, you can now purchase Epic and Summit passes on-line. In the past, you had to do your first purchase in-person in September; this year, you don't even have to do that.
Epic Pass - $599 - Unlimited skiing at Keystone, Breckenridge, Vail, Beaver Creek, A-Basin, and Heavenly with no blackout dates
Summit Pass - $449 - Unlimited skiing at Keystone, Breckenridge and A-Basin; 10 days at Vail/Beaver Creek (not valid Thanksgiving weekend, week between X-Mas and New Year's, and President's Day Weekend)
www.coloradopass.com