Amazon has the 24-Count Maison Perrier Foreve Flavored Sparkling Water (11.15oz Cans, Blackberry) on sale for $15.46 - 20% off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel anytime) = $11.60 with free shipping on $35+ or with Prime. Roughly 48 cents per can. (All other flavors are slightly more, around 50 cents a can.)