I think MC was 449 initially and you got to add a third free day at any one resort. So say I choose SB. That gives me three days at SB for $449 (plus tax). If I add a quad pack for $260 (that includes tax) that would give me 7 days at SB for $709 ($101/day). If I added 2 more quad packs for a total of 15 ski days, it still leaves me at $82/day.
Are those 15 ski days just for you? If so, a season pass at that point is a better value. Right now an SB season pass is $1200 (and we're already at the 2nd price increase for it I think). One benefit of an SB pass is also that you get 50% off prices at all the other Mountain Collective resorts. So in a situation where you're not sure whether you're going west or not, that benefit being there at no extra cost either way could work out. Of course in the east you're locking yourself into SB, but by buying so many quad packs you're doing the same thing anyway.
There is clear value to me if I know I'm going out west, but right now, it doesn't seem to make sense. I looked at the math on Ikon and Epic as well. Unfortunately, it seems to me that if I don't know about going out west, the economics don't make sense.
Yea, if you don't know for sure it makes the decision more challenging. No doubt about it.