Nice place to stop.
No store, just pumps. Must have a credit or debit card. 2 other 24 hour stations 1 (87b octane only) and 1.5 miles (regular and premium gasoline) west of these pumps.
Gas buddy (or someone who doesn't know gas grades) has midgrade listed as available. Casey's has 2 grades of 87 octane (with and without alcohol) but nothing higher. This can mislead those who's vehicles require higher octane fuel.