I have my own mix- 3 pkg's lemon kool-aid (30 cents), 1 cup maltodextrin (nearly free- I got 10 pounds for 3$, and a cup is about 100 grams), 2 cups sugar (50 cents), 1 tsp salt (a penny?), 1 tsp half-salt (5 cents?). Use about 1-1.5 tbsp of the mix in a bidon, depending on how much hydration to energy replacement needed. *Way* cheaper than even the powdered gatoraid, about 2 cents a bottle. Plus it tastes better and works better, IMO.