Um... a luxury item perhaps?
Ice Rocks: While we see these spring water ice cubes not only as a status symbol ($3.99 for 48 ice cubes) among “luxurists,” they also may become a popular safety precaution for travelers who want clean ice for their drinks. (Hey, people used to think nobody would buy bottled water.) - trendcentral.com
ICE ROCKS :: Water Bank of America Inc.