Amazon has the 16-count Liquid I.V. Hydration Multiplier Electrolyte Powder Easy-Open Packets Supplement Drink Mix (Concord Grape) on sale for $22 - 25% off coupon (check "Save an extra" box, eligible on first S&S order for this product) = $16 with free shipping on $25+ or with Prime. One packet can provide the same hydration as two to three bottles of water.