We haven't assessed it ourselves. The government did it and provided us with the data. The government has arrived at estimates of around $0.17 per litre for gasoline and $0.16 per litre of diesel, once again, in 2030, when the Clean Fuels Regulations will be fully in force.
Evidence of meeting #72 for Government Operations and Estimates in the 44th Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was cost.
A video is available from Parliament.