Amazon has the 4-Pack 12-Oz Red Bull Sugar Free Energy Drink (Amber Edition Strawberry Apricot or Red Edition Watermelon) for $8.98 - $2 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) = $6.53 with free shipping on $35+ or with Prime.