Costco offers this special water in a 24 pack of 20-ounce bottles that costs just under $17, or about 3.5 cents per ounce. If samples are 3 ounces, that's about $1 of free water.
Apparently, the sample table was a popular attraction and blocked the aisle, but an astute Reddit commenter who managed to nab one filled us in on the taste: "Just like water."