Amazon has Kraft Mac & Cheese (15 pack of 7.5 oz boxes) on sale for $9.76 or 65¢ per box when you Subscribe & Save.
What is Subscribe & Save? Amazon has set up a program that allows consumers to receive 15% off (current discount) when you agree to receive auto shipments on an item. I recommend selecting every 6 months for more control, but you can change/cancel your subscription at any time. For some items, having an Amazon Mom account will allow you to save an additional 15%. Shipping is free on Subscribe & Save orders. To receive FREE 2 day shipping on any Amazon order, sign up for Amazon Mom or Amazon Student today. Both are free versions of Amazon Prime.
You may run across other sites that warn you to cancel your Subscribe & Save as soon as it ships. My personal recommendation is to set it for 6 months. You can go into your “Manage Subscribe & Save” options at any time & choose to ship now, skip next shipment, or cancel.
I don’t recommend cancelling unless its something you decide you won’t use again. IMO, if too many people start signing up & cancelling Amazon may discontinue the program. It was designed to encourage people to use Amazon to stock up on items. If the system is abused, well….we all know how coupon abuse has led to some sad changes….