Prime Members: 13.65-Oz KEY NUTRIENTS Electrolytes Powder (Lemonade) $12 w/ S&S + Free S&H

Amazon is offering the Lemonade flavor of Key Nutrients for $11.99 after applying a $15 off coupon and choosing Subscribe & Save. Other flavors are also on sale with varying prices. The nutrient profile is good compared to the competition and there's not a lot of sodium if you're trying to avoid that!