Amazon offers decent grocery deals without having to clip a coupon or even leave your house! For example, today Kraft Blue Box Macaroni & Cheese, 7.25-Ounce Boxes (Pack of 15) is just $9.76 with Subscribe & Save, which makes each box just $0.65!
This ships free with Amazon Prime or Super Saver Shipping.
Remember, you can cancel Subscribe & Save at any time by heading to your Amazon account>Manage Subscribe & Save Items, and removing those items from that page. Most people do this after they arrive on their door step by going to their Account, Subscribe & Save items.