As many Americans search high and low for the cheapest gas prices, Allen Cornelison fills the 27 gallons in his Dodge Durango at $3.19 per gallon without blinking an eye. “I don’t even know what I paid for this today,” Cornelison, 26, said after filling up his SUV Wednesday. If spending more than $80 per fill-up isn’t going to influence Cornelison’s gasoline-buying habits, it’s hard to imagine what will — and Cornelison admits nothing much does. “I’m all about convenience — whatever’s close,” he said. Not everyone agrees…. [...]