The simple answer to this is 'Yes'. Under fair trade laws, a manufacturer cannot have any monopoly on consumables. This law was implemented in the same way to stop a car manufacturer from trying to tell their customer that they can only buy specific parts or use specific petrol named by them; otherwise, they would invalidate their warranty. This cannot happen in Australia. We are here to ensure we only supply you with premium products that will ensure your printer is still working well and producing the yield you are looking for.