Amazon cuts $3 off a selection of Oral-B replacement brush heads when you click the "Clip this Coupon" button below the item's price on the product page. (Oral-B Professional Dual Clean 6-Pack is pictured.) Plus, take an extra 5% off and bag free shipping when you add an item to your cart via Subscribe & Save. Prices start from $2.67 after all discounts. Choose from among 3D White Action, Professional Floss Action, and Sensitive.