In addition to the Gizmodo article HP Ink Costs More Than Human Blood, Booze
(via BlogsNow), check out The Price of A Gallon, a list of liquid prices at cockeyed.com (via Autonomous2323). The only liquids topping black ink for an inkjet in price per gallon are mercury, insulin, Chanel No.5, LSD, and a couple of rare animal toxins! The pricing on those tiny cartridges is completely absurd.