No, the Ecofiscal Commission hasn't done that cost estimate yet, but there are a number of estimates out there. The most high-profile one was done by Sir Nicholas Stern, former chief economist for the World Bank.
His estimate was that the cost of inaction on climate change would be relatively equivalent to the cost of both World Wars and the Great Depression combined. Different people have higher numbers or lower numbers than that, but that's the order of magnitude of not dealing with climate change. Certainly, the insurance industry has seen its payouts for severe weather events go up dramatically over the last 20 years. They're one of the hardest lobbyists at global climate summits because they're on the paying end of the costs of climate change.