Amazon has the 360-piece Eclipse Spearmint Sugarfree Gum (6 bottles w/ 60 pieces each) on sale for $24 - $7 off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel anytime) = $15 with free shipping on $35+ or with Prime. Roughly 4 cents per piece.