The ticket window is the trap, not the price of Colorado skiing. A walk up day at the Vail owned giants now runs deep into the $4,000 to $8,000 family week territory once you add four people and a few days, while the independents like Loveland, Arapahoe Basin, Monarch and Eldora sell a day for a fraction of that. If you only ski a handful of days, buy those independent tickets online in advance and skip the giants entirely.
If you want the big mountains, the answer is a season pass bought in spring, not a ticket bought at the lift. An Ikon pass unlocks Copper Mountain, Winter Park, Eldora and Arapahoe Basin, an Epic pass unlocks Keystone, Breckenridge and the rest, and either pays for itself in three or four days. Then win the trip on lodging: stay in a real town like Salida, Fraser, Durango or Grand Junction rather than a slopeside village, drive or take the train rather than fly into a mountain airport, and cook most nights.
Decide what you are buying before you book. For the lowest possible cost with great snow, the Divide independents win, and powder hunters should read our United States powder ranking. For big mountain skiing at a fair price, pair an Ikon pass with Copper or Winter Park. Compare the wider picture in our budget United States guide, the home region in the Colorado ski guide, and the full national view in the United States destination guide.