Amazon has the 4-Pack Colgate Total Clean Toothpaste (5.1oz Tubes, Clean Mint) for $15.98 - $6 off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel at any time) = $9.18 with free shipping on $35+ or with Prime. That's roughly $2.30 per tube vs. $4.96 at Walmart.