If a website states one can buy one day discount lift tickets to destination ski resorts like Aspen, Vail, or Telluride in a Colorado grocery store - they are clueless.
Lift tickets offers do change - I try to give the most current information here. I can always call or pedal down to the local King Soopers or Safeway for an update.
Updated Feb 6, 2017
Beaver Creek -
Steamboat - No grocery store sales or Costco sales.
Telluride - No grocery store sales or Costco sales.
Winter Park Resort -
Copper Mountain - Grocery store sales. No Costco.
A-Basin - Grocery store sales.
Sunlight Mountain Resort - Grocery store sales. No Costco.
Powderhorn - Grocery store sales. No Costco