The new blends cost an estimated 5 to 15 cents more to make per gallon than standard-issue, regular gas. Plus, California became dependent on a limited number of refineries, and those refineries reaped higher profit margins than similar facilities elsewhere in the United States. “It’s a stranded market, and it’s much easier to control prices in a stranded market,” said Judy Dugan, research director of the Consumer Watchdog nonprofit group.
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Why California Drivers Pay More For Gasoline