Stock up on toothbrushes for the family at CVS! Select Colgate toothpaste and toothbrush multipacks are offering a $2.00 Extrabucks reward when you buy one. There are several pricey options, but check out the best option we found. Buy a three-pack of the Extra Clean variety of Colgate toothbrushes for $3.99. After Extrabucks, pay just $1.99 for three brushes. And you can do this deal twice.