Medicare card details of every Australian currently up for sale on the dark web

The title is misleading. There isn't a mass dump of Medicare records, there's just some crook in DHS who will email you a single record in return for $30, presumably in bitcoin. No doubt there are a dozen crooks who will print the same record for $30 cash.

Just curious:

If I was an Australian citizen and I wanted access to my full medical records, would it be cheaper / easier to go through legal or illegal channels?