Peace at the pumps has come to Abbotsford, B.C., but for a short time Monday morning there was an all-out gas war.

The Abbotsford Costco dropped its prices first, bringing the cost of regular unleaded to a low 116.9 cents per litre. Others quickly followed suit, including a Petro-Canada where drivers lined up to pay 117.9 cents per litre. A nearby Chevron station still showed 137.9 on its signs, which is closer to the recent average price of 134.3 cents per litre in the city, according to .

“I was driving by and I made a U-turn to come back and fill up,” said one woman at the Petro-Canada station, adding she couldn’t recall the last time the prices were so low.

“In marketing, we call Costco a market disruptor,” said Lindsay Meredith, a professor at Simon Fraser University. “If Costco is undercutting you, you better match their price so you can sell your stuff. Once you clean up the tanks a little bit, back up goes the price.”

Indeed, by late morning most gas stations had returned back to prices above 130 cents per litre.