Mine was like $60 as well and never went beyond that.
So far, i got my Insurance Liability for the home daycare and that.

I never got inspected by the Ministry, I wish they do.
But maybe the $60 is to pay for the clerk to make sure that the papers were filed in the right place and that I am registered business in Ontario. And yes, you are right, we give our business numbers, not our personal SIN.