Starting 6/3 CVS will have Starbucks Refreshers on sale 2 for $3 with $1 ECB back. There is also a $1/1 Starbucks Refreshers coupon. Use 2 coupons, and get 2 Refreshers free after coupon and ECB.
Starting 6/3 Buy 2 Starbucks Refreshers 12 oz 2 for $3
Use 2 $1/1 Starbucks Refreshers Coupons
Get back $1 Extra Care Bucks
Final Cost = 2 Free :)