Amazon has a 12-Pack 16oz Mountain Dew Kickstart Drink (Pineapple Orange Mango) for $12 - 15% 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) = $9.60 with free shipping on $35+ or with Prime. 

Mix of "dew", fruit juice and caffeine; each can has 80 calories.