Thumb Score: +21

Amazon [amazon.com] has 12-Pack 12-Oz Dr Pepper Blackberry Zero Sugar 3 for $23.91 – $8.82 (multibuy discount) = $15.09.
Shipping is free with Prime or on $35+ orders.

Savings
Save $8.82 on 3 select item(s) (check and activate [amazon.com]) (Stock is regional, YMMV)