Not sure about Cleveland local areas but I spent some time sourcing decent fuel in Columbus this winter and found one really good gas station.
The SHELL station on Hamilton Rd south of I70 has three good options, all PUMP gas at better prices. They have a VP C-12 pump @ $10.00 a gallon, and two CAM2 pumps which is Sunoco racing fuel branded to sell at non Sunoco facilities. One is 110 Leaded Ethanol free @ $8.25 a gallon and the other is 110 UNLEADED, Ethanol free @ $8.49 a gallon. All these prices were a month ago,seems to be about half the price of the same or similar in 5 gal retail cans.
This station is close to Columbus Motor Speedway and I would think that's the reason for such great choice.