Amazon has the 4-Pack 8.4oz Red Bull Amber Edition Sugar Free Energy Drink (Strawberry Apricot or Watermelon) for $5.99 - $1.50 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) = $4.19 with free shipping on $35+ or with Prime.