Gas prices in Maine are down more than two cents per gallon, yet remain well above the national average. Price-monitoring website MaineGasPrices.com reports Monday that the average retail cost of a gallon of gas in Maine has dropped to $3.74 in the past week, a full dime above the national average. Maine prices are now nearly 12 cents per gallon lower than at the same time last year, and about 10 cents per gallon lower than a month ago. A company analyst says prices are dropping at a time of year when prices normally rise. The Maine prices are based on a survey of more than 1,200 gas stations statewide.