Here are our favorite snack deals available this month at Costco. These items have instant savings that automatically reduce the original price of the item at checkout. A 30-ounce bag of Cape Cod Kettle Cooked Chips is regularly $6.49. Through 3/12, there is a $2.30 in-store savings that lowers the price to just $4.19, or $0.14 per ounce. Walmart sells an eight-ounce bag for $2.88, or $0.36 per ounce. Clearly, Costco is the better deal!