Canon CL41 twin colour pack, cheapest I have seen.
single pack cost $44.30 in office works.
http://www.officeworks.com.au/retail/products/Ink-and-Toner/…
Shipping was free to me in Sydney. Few stores have stock for pick up and online offer until stocks last.In my opinion it is a good deal if you happen to have any of the following printers.
Manufacturers Reference: CL41-TWIN
Colour: Cyan, Magenta & Yellow
edited: typos
Compatible Machines: iP1200, iP1300, iP1600, iP1700, iP1900, iP2200, MP150, MP170, MP450, MP160, MP180, MP460, iP6210D, iP6220D, iP6320D, iP1800, MP210, MP220, MP470, MX300 , MX310
And Canon continues to be the most expensive on ink. If you really want ink, you'd be better getting off the 40 41 combo off of eBay for $40. Just make sure you buy genuine and not the third party ones. Like this genuine one, http://www.ebay.com.au/itm/Canon-Ink-Cartridges-Duo-40-And-4…