Amazon has Mountain Dew Kickstart in Various Flavors, 16 Fl Oz, Pack of 12 for $10.50 when you clip the 25% off coupon and checkout with Subscribe and Save.
https://www.amazon.com/dp/B07GDXN…=UTF8
Flavors available:
Black Cherry
Fruit Punch
Mango Lime
Midnight Grape
Orange Citrus