Gas prices across Pennsylvania are lower this week than they were last week. That’s according to Triple A, which says the average cost per gallon is down by about six-cents compared to last week, currently at three-dollars and 25-cents per gallon. Prices across the state still remain higher than the national average, which is currently at three-dollars and 15-cents per gallon. Locally, gas is running at three-dollars and 29-cents per gallon.