Dude, Cali and CO are fucking outlandish with their daily ticket prices. Probably cheaper to fly from LA or Denver and do a week in SLC then to drive to one of these resorts and pay full price. I don't even think Steamboat gives a discount until you do 5+ days.
Then again, paying $70 for the wintry mix that is the EC is still rape-age. No offense to Stowe & Greek Peak, I miss ya both.