I think some of you might be confused. The Epic pass and the 5-mountain pass are different passes.
The Epic is unlimeted at Vail, BC, Breck, Key, Abasin, and Heavenly. No blackout dates. Static price of 579.
The 5-mountain is unlimited at Breck, Key, Abasin, with 10 days total at Vail OR BC. Only discounted tix at Heavenly. Price is always increasing till they stop selling it sometime in late November.