Best deals are found when the lifts aren't turning. Once they start turning, you're too late.
They just started offering a new pass product. It is targeted to the out-of-state skier who wants a pass product. This is the only pass they have that you can buy online. Everything else you have to buy in person the first time. The new pass is the Epic Pass. There are no blackout days and it also gives you unlimited days at Heavenly. More info = Epic Pass - The Epic Pass - $579 - Unlimited and Unrestricted Colorado Ski Pass - Vail Resorts
To find the ultimate deals, you need to talk to a Vail front-line employee. They know all the cash saving strategies.