Amazon has the 24-Pack 8.4oz Red Bull Energy Drink (Blue Edition Blueberry) for $29 - $6 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) = $21 with free shipping on $35+ or with Prime.  Also available in 24-Pack Amber Edition Strawberry Apricot is $23.