Gas is cheaper in Florence?

My wife and I left Coos Bay on June 22 and drove to Remer, Minn., to visit relatives. We paid $4.36 per gallon for regular unleaded gasoline a gas station on the north end of Coos Bay the morning we left. We returned on July 12 after traveling 5,638 miles through 12 states. The most expensive gas we bought was here in Coos Bay on June 22 and in Redding, Calif., on July 11 at $4.49 per gallon for regular unleaded. The cheapest we bought was in Sioux Falls, S.D., at $3.72 per gallon for regular unleaded.