Amazon has the 4-Count 1-Liter Pedialyte AdvancedCare Electrolyte Solution with PreActiv Prebiotics for $18..52 - $8 off (check “Save an extra” box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel at any time) = $9.52 with free shipping on $35+ or with Prime.