Amazon has the 12-Pack 16oz Cellucor C4 Sugar-Free Energy Drink (Frozen Bombsicle) for $19 - 30% 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) = $12 with free shipping on $35+ or with Prime. 200mg of caffeine per can. Also available in Peach Mango Nectar, Cherry Berry Lime, or Variety Pack for $2 more.