Halaven is on the PBS for treatment of metastatic breast cancer so you shouldn't need to pay more than the PBS script fee for it - which is currently $38.80 or $6.30 if you have a health care card.
You have not confused it with Faslodex have you? Faslodex is not on the PBS and there is a $900 cost over three months for it.
If you would like to call BCNA on 1800 500 258 and ask for me, I will see if we can sort this out for you.
Kathy (BCNA Policy Team)
To be eligible for it via the PBS you need to have had at least two previous types of chemotherapy for metastatic disease and be having Halaven as a monotherapy (ie on its own - without any other PBS-subsidised treatments). Talk to your med onc about why you can't get it through the PBS. Don't pay for it without ringing us at BCNA first!