This week at Walgreens, Colgate toothpaste is on sale for $3.99. Plus, buy two Colgate products and receive a $2.00 Register Reward. A Register Reward can be used like in-store credit on your next shopping trip. Buy two toothpastes, and use two $2.00/1 Smart Source newspaper coupons at checkout. The Register Reward makes the final price $0.99 each!