Select Prime accounts only, YMMV. Amazon has the 4-Pack of Colgate Total Whitening Toothpaste Gel (4.8oz each) for $9.92 - 5% off with Subscribe & Save (can cancel anytime) - $2 off coupon (check “Save an extra” box, eligible on first S&S order for this product) - $2.43 off at checkout ("Extra Savings") = $4.99 with free shipping (with Prime).