COSTA MESA (CBSLA) — The price for a gallon of regular gas has climbed as high as $4.05 in Orange County recently, which is why many drivers headed to Sam’s Club in Fountain Valley, where gas was going for $3.30 per gallon Monday — a full 75 cents cheaper than the most expensive stations. “Gas keeps going up,” Mandy Hall, a driver, said. “I don’t know how they can justify doing like 10 to 20 cents a day, every time I turn around.” According to the Auto Club of Southern California, gas prices in Los Angeles County have hit their...