Amazon offers the Propel 16-oz Water With Electrolytes 12-Pack in Berry for $6.29 $6.38. Checkout via Subscribe & Save to drop it to $5.98 $6.06. With free shipping for Prime members, that's the lowest price we could find by $3, excluding the mention below.

Be sure to cancel your subscription once your order ships to avoid being billed for subsequent shipments. A close price: Walmart charges $6.38 with free in-store pickup.