cheapest usually $39.99 also Ostelin Vitamin D Liquid 50ml is $12.99 https://www.chemistwarehouse.com.au/product.asp?id=64041 (each 0.5ml contains vitamin d3 1000iu)
Ostelin: that's $0.11/capsule - cheapest usually $0.12 ($29.99 for 250 caps)
Panamax: limit of 2 per person
http://www.chemistwarehouse.com.au/product.asp?id=41147