Right now Amazon has Apple Jacks Cereal, 12.2 oz, 3 pk for only $5.60.  Here is what you will need to do:

$13.99 Apple Jacks, 12.2 oz, 3 pk
5% off by clicking Subscribe Now
55% off at Checkout
Net Price: $5.60

Free shipping is included with the subscribe and save membership and can be canceled at any time.  You will see the discount as soon as you get to checkout.

This will ship for Free with Super Saver Shipping with orders of $25 or more. You can upgrade your membership to Amazon Prime and get Free 2-Day Shipping.

Disclaimer: This post contains a link to an affiliate. See my Disclaimer Policy for additional information. Prices are subject to change without notice from Amazon.com so please verify the purchase amount before you order.