What you always suspected. Three companies have pleaded guilty to fixing the price of gasoline between May and November of 2007 in two Ontario cities: Brockville and Kingston. The Competition Bureau announced in a news release earlier this week that Pioneer Energy LP, Canadian Tire Corporation and Mr. Gas “agreed among themselves to set the gas price for consumers at the pump.” The agency said it found evidence that the retailers or their representatives called each other to discuss the price they would charge for gasoline. Specifically, the companies agreed to co-ordinate their response to price changes initiated by major-brand competitors. The companies entered their guilty pleas in a Brockville courtroom and will pay a total of $2 million in fines.