COLUMBIA, S.C. (WOLO)– Gas prices here in the Midlands have jumped 15 cents over the last week. According to Gasbuddy, average gasoline prices stand at  $3.98 a gallon today (Monday, October 12). The national average has actually fallen, it now stands at $4.29 a gallon. The national average pr ice of diesel has also fallen nearly six cents compared to a week ago and stands at $6.24 per gallon. Categories: Local News, News Tags: Columbia gas prices, Gas Prices, gas pump, Iran, Iran War, national gas prices, Oil Prices, SC gas prices, South Carolina gas prices, U.S. economy ...read more read less