In the paper, we just looked at exactly what the PBO said it would cost. You divide that by how many tonnes the PBO estimates that you save and you come up with the cost for displacing every tonne of carbon in Canada, which is $2,887. That's obviously far higher than the consumer carbon tax, which we kiboshed at $80 because we thought it was too high. It seems like a gross use of climate policy when there is so much lower-hanging fruit and there are so many cheaper ways to do it.
Norway's EV subsidies are extremely high. The Inflation Reduction Act has some very high values. The German move to wind and solar was extremely expensive. There are a few comparators, but I didn't find that any were as high as the emissions cap.