This is somewhat misleading. While the tuition fees at the Australian universities are variable, USyd's fees are $66,000 AUD, and UQ's fees are $58,000 AUD. To the best of my knowledge all of the Australian medical schools have fees in this price range for international students, some may be a bit higher, and others a bit lower.
Most of the Irish schools, with the exception of RCSI, charge international students approximately €40,000 ($62,000 AUD) per year. Plus the cost of living in Australia is considerably higher (1.5-3x more) than it is in Ireland.
That being said, some of the Australian schools do have lower admissions requirements (particularly UQ), and they're certainly not bad options if you're looking to study medicine abroad.
From the FAQ on Atlantic Bridge's website:
"
Tuition fees for the 2013/2014 academic year are as follows:
Four-year courses:
University College Cork – 39,200 Euros
University College Dublin – 39,200 Euros
The University of Limerick – 39,500 Euros
The Royal College of Surgeons in Ireland* – 50,600 Euros
Five-year courses:
University College Cork – 31,000 Euros
University College Dublin – 31,000 Euros
National University of Ireland, Galway – 31,000 Euros
Trinity College Dublin – 31,100 Euros
The Royal College of Surgeons in Ireland* – 49,100 Euros
The Royal College of Surgeons in Ireland – Medical University of Bahrain – 39,500 USD
Six-year courses:
University College Dublin – 31,000 Euros
National University of Ireland, Galway – 31,000 Euros
The Royal College of Surgeons in Ireland* – 49,100 Euros
The Royal College of Surgeons in Ireland – Medical University of Bahrain – 39,500 USD*The Royal College of Surgeons in Ireland is a private school and a registered charity.
Tuition fees are subject to annual review.
"