 544 now, the tight range yo-yo of gas prices this summer. Continuing last week with a nine cent drop on the average cost of a gallon of regular gas, according to the weekly survey by GasBuddy of local service stations, the price of the pump on average $3.42, two cents lower than a month ago, a dime lower than last year. GasBuddy says weaker than expected demand, rising supplies and quiet weather in the tropics all played into the reduction in prices.