Hungry? Costco is selling a 27lb. bucket of Mac and CheeseYahoo Finance VideoJanuary 11, 2019Depending on how much you like cheese, this product could be an appropriate size. Costco is now selling a 27 lb. bucket of mac and cheese with a shelf life of 20 years. Yahoo Finance's Jen Rogers, Myles Udland and Zack Guzman discuss.