WA here is likely Western Australia.
https://www.quora.com/Is-it-illegal-to-be-in-possession-of-m...
https://www.quora.com/Is-it-illegal-to-be-in-possession-of-m...
Of course if the single desk is paying you the farmer, better than market prices during a glut, when the market picks up, the single desk is going to have to pay down it's debt and (and Saddam Hussein) before it pays you. This is one of many scenarios under which a bear market socialist might feel a longing for the free market stirring in their soul, and the potato act is the big stick that kept farmers from cutting their own deals.