Amazon has the 3-Pack of Colgate Activated Charcoal Toothpaste for Teeth Whitening (4.6oz each, Mint) for $14.55 - 5% off with Subscribe & Save (can cancel anytime) - $4 off coupon (check “Save an extra” box, eligible on first S&S order for this product) = $9.82 with free shipping on $25+ or with Prime.