(Decatur, IL) -- It looks like Decatur is in for another roller coaster ride when it comes to gas prices. Triple-A says the average price for a gallon of regular stands at three-ten, down 27-cents from last Tuesday’s survey. The median price in Decatur has see-sawed all month long, so it looks like we’re on track for a price increase as the week wears on. A gallon of regular in Bloomington remained steady over the past week at three-15. Champaign drivers are paying the same price but that’s a nine-cent improvement in that town since last Tuesday.