Amazon: Kraft Macaroni & Cheese $0.65/box

Currently, you can get Kraft Blue Box Macaroni & Cheese, 7.25-Ounce (Pack of 15) for $9.77 when you use the subscribe & save option – and shipping is free.  That breaks down to $0.65/box.  

Remember, you can cancel the subscribe & save at any time after you receive your shipping notification.  Just go under you Amazon account & click on ‘manage subscribe & save’.