Tess, its 13k gap fee with Andrew I'ves (there abouts), no matter where you go travelling home is going to be fairly uncomfortable, at 5 week mark I drove for many hours home on endone (heavy pain killer), that said I don't recall my friends saying the trip to the airport from thailand stood out as a particular issue.
I'm not here to sway anything, just to say what the price in Aus was, Suporn is a damn fine surgeon, Chetts had some major issues (two fistulas in the last year or so) but does good work and is a little shorter on the waiting lists.
I had been talking to someone who just srs in melbourne like a month ago and she had a blood clot and had to get put under an additional two times, she's a bit depressed at moment that she hasn't recovered as fast as she had hoped and is having wisdom teeth issues , but treatment for that been postponed so she can recover.
My friend that went to chett had a completely unrelated issue to her surgery and spent almost her entire recovery in a random thai hospital. (she says travel insurance was a life saver)
Stuff can go wrong, no matter where you go.
Edit : I also just asked someone more experienced than me about Dr Haertsch and they said health insurance and medicare does cover the majority of it and brings it down to a similar price to Andrews