PA Gas Prices Down Another Dime Wednesday, December 21 by Marissa RigattiPresented by GasBuddyUNDATED – Average gasoline prices are down another dime in Pennsylvania.GasBuddy reports a drop of 10.4 cents per gallon in the last week, putting the average price at $3.66 per gallon across the Keystone State.GasBuddy determines the weekly average price by surveying more than... Read More.