Amazon Prime Pantry – Propel, Strawberry Lemonade, 16.9 Ounce Bottles, 12 Count – $1.99 (Availability Varies Based On Location)

Amazon Prime Pantry has 12 Count of Propel water in Strawberry Lemonade flavor (16.9 OZ Bottles).
Amazon Link
Looking at Walmart, it appears that the 12 count of other flavors retail for around $6 to $7 each.
Walmart Link 1
Walmart Link 2
Shipping from Prime Pantry is free $10 and over if you have a Prime Pantry subscription ($4.99 per month in addition to Amazon Prime). Otherwise, you have to buy $35 of product sold by Prime Pantry to get free shipping. Shipping is $5.99 if you buy less than $35 of products.