$1.89 at chemist warehouse http://www.chemistwarehouse.com.au/product.asp?id=41147
Could be worth trying the "we will match it and give you 10% off the difference Chemist Warehouse lowest prices guaranteed" as Pharmacymax is a division of Amcal Max Rutherford Pharmacy and an Australian registered online pharmacy.
https://www.ozbargain.com.au/node/146451#comment-2073204
FREE SHIPPING ON ORDERS OVER $50 AND UNDER 3KGs
$11.40 shipping for the 3 boxes compared to $5.67 pick up from Chemist warehouse… NO BARGAIN HERE.