For Prime members only, Amazon offers the Tang Orange Powdered Drink Mix 72-oz. Canister 2-Pack for $9.77 with free shipping, via the directions below. That's the lowest price we could find by $4. Each canister makes 22 quarts. To get this price:

1. View the Tang Orange Powdered Drink Mix 72-oz. Canister 2-Pack for $13.96
2. clip the 25% off coupon
3. checkout via Subscribe & Save for a final price of $9.77