The cost of regular gas in Kentucky is up two-cents-a-gallon from a week ago. Triple-A says the average price per gallon in the state is two-dollars-and-73-cents today, while the national average is two-85. Drivers in Covington are paying the most in the Commonwealth at two-91 a gallon, which is nine-cents-higher than last Friday. The lowest prices are posted in the Elizabethtown-Fort Knox area at two-56-a-gallon.