The added cost in California is no doubt related to the fact that the mere changing of oil in that state potentially violates 350 state laws.There is probably a built in attorney fee, 25 state and local taxes, a Prop 65 fee, and funds necessary to have 5 guys in moon suits carry the oil off to a safe location in a neighboring state. In the other 49 states, its $25-$30 if you bring the stuff, and about $90-$110 otherwise. PS If you are the mood to once again pay about $100 too much for something, order some Snakeoyl mats.