crest money maker at walgreens

Went shopping today at Walgreens (Emond, OK – Santa Fe & Edmond Rd.) and received a nice suprise at the register when I paid for my Crest toothpaste. The ad states buy 2 Crest Toothpaste with Scope Outlast for $6.00 and get $3.00 RR.  Well, when I checked out I received a $2.00 RR as…