Amazon cuts 25% off a selection of Kellogg's Special K shakes, cereals, and protein bars via this clippable coupon. Plus, bag an extra 5% off and free shipping when you add eligible items to cart via Subscribe & Save.

A best bet is the Kellogg's Special K Cereal with Red Berries 14.7-oz. Box 3-Pack (pictured) for $7.71 after the above discounts. With free shipping, that's $3 under what you could expect to pay at a local Walmart.

Note: Be sure to cancel Subscribe & Save once your order ships to avoid being billed for subsequent shipments.