Gatorade Endurance Formula (lemon lime) is over half off right now. There is the lightning deal and a 20% coupon being added right now so I paid $10.80 for it. I go through quite a bit of it during the summer since I have cramping problems.

(https://www.amazon.com/Gatorade-Endurance-Formula-Powder-Lemon/dp/B003V5G9L0)