I actually don't know (would never make a good politician)--don't look at the price when I buy it, in contrast to gasoline! Same with bottled water which, in small bottles, is probably a bit more than gasoline. But then, I don't go through 15 gallons of milk/bottled water a week either.

__________________
-----
Todd (Bowie, MD, US, North America, Earth, Sol System, Vega region, Local Bubble, Orion arm, Milky Way Galaxy, Local Group, Virgo A Cluster, Virgo supercluster, the universe in which spock is clean shaven)

Quidquid latine dictum sit, altum sonatur.

personal page: http://blog.astrosketches.info