Head over to Walmart and grab the Colgate Baking Soda & Peroxide Whitening Bubbles Brisk Mint Toothpaste 3-pack for just $3.96! That is just $1.32 per tube! To compare, this is on sale for $6.33 on Amazon. Be sure to select free in-store pickup to avoid shipping fees. Otherwise orders of $35 or more will qualify for free two-day shipping.