I called the sheriff's office. They do fuel after hours. There is no "call out" fee. The office person said just call when you get on the ground.
From Airnav:
Fuel available: 100LL
FOR FUEL MON-FRI CALL 417-967-3348; SAT-SUN & EVENINGS CALL 417-967-4165.Parking: hangars and tiedownsAirframe service: MINORPowerplant service: MINORBottled oxygen: NONEBulk oxygen: NONE
If you're coming from or headed to the west, Andarko (F68) in Oklahoma has $3.75, 24 hours a day. If you're coming through Texas, Dalhart has $3.85, 24 hours a day. Another Missouri choice is Moberly, at $3.75. Not sure about hours at Moberly, would need to call.