Amazon has a 12-Pack of Gatorade Zero Sugar Thirst Quencher, 20 fl. oz. Bottles (Orange) for $7.47 - 5% off with Subscribe & Save (can cancel at any time) = $7.10 with free shipping on $25+ or with Prime. The Regular (full sugar!) version in the same flavor is the same price after S&S.
$7.10 retail: $13Report