With orders of $25 or more, Amazon offers the Chex Muddy Buddies 10.5-oz. Bag for $2.98. Clip the 30% off coupon to drop that to $2. With free shipping, that's around a buck less than you'd pay in local stores.

Note: This item is offered as part of Amazon's "add-on program" and can only be purchased with an order of $25 or more.