Upvote:4
Having a baby in Australia to non-Australian-resident parents is quite possibly an expensive proposition. A quick Google search shows that it would likely be at least $6000 for a natural full-term birth without complications. If there are any complications (premature birth, C-section, gestational diabetes, etc - and the list is long) then the medical charges will be much greater.
If your wife's health insurance doesn't mention international terms then nothing outside Canada is covered. You will have difficulty finding a travel insurance plan that allows your wife to travel much after about the 26th week, and even if you do then it won't cover any of the birth. You would have to ask your travel insurance provider if they cover regular pregnancy-related checkups.
If you work it out on the spot in Australia, then you will certainly be paying all of it out of pocket.