Gas prices steady for third week after early Spring jump GasBuddy says their daily survey of 3,028 gas stations in South Carolina shows that prices are averaging at $2.60 per gallon, Monday. (Source: Live 5/File) By Riley Bean | April 5, 2021 at 7:26 AM EDT - Updated April 5 at 9:27 AM CHARLESTON, S.C. (WCSC) - Gas prices fell 1.4 cents per gallon in South Carolina in the past week. GasBuddy says their daily survey of 3,028 gas stations in South Carolina shows that prices are averaging at $2.60 per gallon, Monday. GasBuddy says Gas prices in South Carolina are still 11.4 cents per gallon higher than a month ago after an early Spring spike and stand 87.0 cents per gallon higher than a year ago.