It's a myth that stations barely break even on gas. There is absolutely profit to be made on gas. The markup is typically 10%. Apply that to a $75 fill up, that's $7.50. That's before expenses, of course. But there's very little labor cost in selling fuel vs MTO.

Then there's the convenience store business that is driven by having gas. If I need smokes and gas, I'm only going to want to make one stop.