I have just spoken to the Nurse at the clinic who is the contact point for patients re TMS. She said that 1 in three benefit from having TMS. The time it takes for the treatment is 45 minutes.
There were no costs additional costs for having the treatment, apart from the normal hospitalization costs, which is dependent on having private health insurance.
The treatment is under the oversight of the Alfred Hospital (Major Melbourne Hospital). At the Alfred they are doing this treatment all day every day. So it seems that a few people are now choosing TMS to help them.
Still pondering........