A TikToker revealed that to get the most for your buck when buying ground beef at Costco, you should ask the butcher for a "10-pound chub." According to Epicurious, the grocer's "chub" is ground beef mixed with leftover trimmings of other meats like steak; compared to the store's smaller ground beef packages priced at $3.49 a pound, some locations offer "chubs" for $2.99 a pound.