Thumb Score: +36

Amazon [amazon.com] has 12-Pack 12-Oz Mountain Dew Zero Sugar Soda 3 for $20.91 – (multibuy discount) = $13.94.
Shipping is free with Prime or on $35+ orders.

Price
$40 lower (74% savings) than the typical price of $53.94
$6.97 lower (33% savings) than the previous price of $20.91

Savings
Get 3 for the price of 2 (check and activate [amazon.com])