Coupon-- $1.50/1 Colgate Sensitive Pro-Relief Toothpaste Coupon = $.49 full-sized at Walgreens (use the zip code 80031 if needed)
Walgreens: It's on sale for $4.99 + get back $3 Register Rewards this week. Pay $3.49 after the coupon and get $3 RR back, making it $0.49.
You may also find travel size for free at Walmart.
Walmart: If your Walmart store carries the Colgate Sensitive Pro-Relief Toothpaste in travel size for $0.99, you can use this coupon to get this FREE and apply the $0.51 overage to other items in your cart.