25% off Select Energy Drink Products. Amazon has the 15-Pack 16oz Monster Energy Sugar Free Energy Drink (Zero Ultra, Zero Variety, Zero Variety, or Juice Variety) for $25 - 25% off (check “Save an extra” box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel at any time) = $17 with free shipping on $25+ or with Prime.