Stop in for a cup of coffee

I mean for total sale. Back in those days of 31 cents per gallon, nothing had a fuel tank big enough to go over a $9.99 total sale so the gas pumps didn’t need to be able to register more than that on the dial.
oh my goodness, my brain was in a glass of bourbon on the rocks, I see. It took a long time to pump 5 dollars worth of gas back in the day..