Thanks for the response, it's been awhile since I used an ambulance. I've got to say, I was willing to believe, what with free Qld buses and all that jazz, but alas like WA it's "qualified":

  There's no cost for ambulance treatment and transport for Queensland residents. This includes treatment and transport that takes place in other parts of Australia.

  If you don’t live in Queensland, you’ll be charged for ambulance treatment and transport. If you have ambulance cover in another state it may cover the cost for you.