As a result of lower crude-oil prices, gasoline prices have started to retreat. That could be good news for consumers who are still sweating at the pump. The average price of a gallon of regular unleaded, nationwide, has fallen to $3.62 from a week-ago price of $3.703, according to the AAA Daily Fuel Gauge Report. That's a drop of 2.3%, which may not seem like much. But if the rate of decline continues for the balance of August, regular gas prices could drop below $3.50 per gallon.