On Tuesday morning gas was $1.79.9 per gallon at the Bluffton Marathon. Monday evening's price was $1.81.9. The $3.79.9 price shown in the bottom left portion of the photo is from the Icon's photo archives, showing the same sign a couple years ago. At the current cost of gas a driver can fill a 12-gallon tank for $21.58. When the price was $3.79.9 per gallon it cost $45.58 for fill the same tank.