Gas prices on the rise in S.C. According to GasBuddy’s daily survey of 3,028 stations in South Carolina, gas prices have risen 14.7 cents per gallon in the past week, averaging $2.42 per gallon Monday. (Source: Live 5/File) By Riley Bean | February 22, 2021 at 8:29 AM EST - Updated February 22 at 11:12 AM CHARLESTON, S.C. (WCSC) - GasBuddy says South Carolina gas prices have risen nearly 15 cents per gallon in the past week. According to GasBuddy’s daily survey of 3,028 stations in South Carolina, gas prices have risen 14.7 cents per gallon in the past week, averaging $2.42 per gallon Monday. Gas prices in South Carolina are 26.2 cents per gallon higher than a month ago and GasBuddy says they stand 22.3 cents per gallon higher than a year ago.