Walgreens Scope Mouthwash only $0.50!!!

***Walgreens Scenario***

Scope Outlast or Dual Blast Mouthwash, 750 mL, $2.99
Buy (1) and Receive $1.00 Register Reward 
Use $1.50/1 Scope Mouthwash, 750 ml or larger RP 11/4 (exp 12/31)
Pay: $1.49 and  Receive $1.00 Register Reward
Final Cost: $0.49