This Colgate Double-Action Toothbrush 12-Pack drops from $14.99 to $9.99 to $5.50 when you enter the promo code CLGT55 at checkout at iTechDeals.com. Plus they ship free. This is a savings of 63% and the lowest price we could find. This works out to be $0.46 per toothbrush. These are soft-bristle brushes that were designed to be easy on the gums. There is no sales tax (except NJ).