my midwife requested them and i (we) received them at no cost.

Birthtalk have a blog describing the things to ask for when requesting your notes. i hope this link is ok

Retrieving your birth records after a traumatic birth : how to get them, what to do with them, and why it can be a healing step | The Truth About Traumatic Birth

if you google "monash foi" you can see the hospital procedure and costs for applying for your records through freedom of information (foi).