Columbus gas prices dropped sharply last week, giving central Ohio drivers some relief after one of the most expensive Fourth of July holiday weekends on record. According to GasBuddy’s survey of 500 stations in and around Columbus, Ohio, the average price of gasoline fell 19.1 cents per gallon last week to $3.61 per gallon. The reported Sunday average was 51 cents lower than one month earlier, but still 73 cents higher than the same time one year ago. Columbus