I don't have data on the exact cost of this particular bill, but what I can tell you, just to echo the concerns that were shared earlier about the estimates the department put forward, is that some of the assumptions they made seemed crazy. They made assumptions that this would be used by virtually everyone.
We've seen this, of course, during pandemic programming where government departments federally and provincially have estimated that, well, if every single business owner ever in the history of mankind used this provision, here's what it would cost. Of course that never happens, but it's meant to scare legislators away from considering these kinds of measures.
Again, I know they have a job to do and I know they take it seriously, but sometimes the results of that cannot be taken seriously when you poke a few holes in them.