Amazon offers the Hershey's 2% Chocolate Milk 8-oz 21-Pack for $11.80. Add it to your cart via Subscribe & Save and it drops to $10.03 with free shipping. That's $0.48 per carton and $16 under the lowest total price we could find for this quantity elsewhere.

Be sure to cancel Subscribe & Save once your order ships to avoid being billed for subsequent shipments at whatever price Amazon then charges.