Amazon offers the Clif Kid Organic ZBar 1.27-oz. Bar 18-Pack in Chocolate Chip or Chocolate Brownie for $8.99. Checkout via Subscribe & Save to cut that price to $8.54 and bag free shipping. That's 47 cents per bar and $4 under the price at your local store.

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