What's more expensive, a gallon of printer ink, a gallon of gas, or a gallon of milk?

Just wondering....What's more expensive, a gallon of printer ink, a gallon of gas, or a gallon of milk?
Printer Ink. I've always wondered what that stuff was made of...What's more expensive, a gallon of printer ink, a gallon of gas, or a gallon of milk?
a gallon of printer ink. :o)
Printer ink. (im quessing though :S)
I think printer ink
It's got to be printer ink.

oily skin