This offer runs thru March 17th and when I see these types of signs I always think there will be coupons coming to help make the deal better and here they are.
So a plan to save money would be
purchase Two 12 packs at $7.99
Use Two of these coupons:
At the register I would pay $14.00 and get a Catalina Coupon For $2.00 off anything else in the store ! which I could use for things like Milk or Bread