Finally some impact relief at the pump has come our way. The cost of gasoline dropped 7.4 percent last month, the U. S. Labor Department reported on Friday. That’s the biggest drop in almost four years, government economists say. Locally, prices dropped eight cents on average in the past week coming to $3.36 on average, according to AAA Mid-Atlantic. However, prices are still about 20 cents higher than the same time last year.