Triple-A says the cost of regular gas in Kentucky is eight-cents lower a gallon than a week ago. The average price at the pump in the Commonwealth is two-dollars-and-74-cents today, while the national average is two-85. Drivers in Louisville are paying the most at two-90 a gallon, down a dime from last Friday. Henderson is posting the lowest average price in the state today at two-52 a gallon.