Amazon has Select Sensodyne Toothpastes & Toothbrushes on sale listed below when you 'clip' the 35% off coupon on the product page and checkout via Subscribe & Save. Shipping is free w/ Prime or on orders $25+.
Note: Must be logged in to clip coupons; coupons are typically limited to one per account. You may cancel Subscribe & Save anytime after your order ships.
Available (prices after 35% off coupon & 5% checkout w/ S&S):