I read with interest the letters on the price of gas in Prince George. I think the only way to fight this is to target one supplier, and don't buy any fuel from them for as long as it takes to drop their prices. They definitely won't like you going to a competitor. It would take an organized effort to accomplish this as a majority of people would need to be involved to harm sales.
This worked the last time it was organized and done, but remember you are also hurting the franchisee of the station. I think it would work fairly quickly, though, as big gas companies would not want this idea spreading across the country.
Remember, these companies won't listen as long as their product keep selling at that price.
John Beebe
Prince George
