(CNN)– AAA reports that the average cost for a gallon of gas stands at $3.65. That’s up $1.03 from this time last year. The national average stands at $4.17 a gallon. Diesel is now at $5.73 a gallon. That’s up over $2.30 a gallon from this time last year. Categories: Local News, St ate Tags: Columbia gas prices, gas price, Gas Prices, national gas prices, SC gas prices, South Carolina gas prices ...read more read less