Credits to aka128 for the initial post, but using the current code, you can discount it further!
Original deal: (https://www.ozbargain.com.au/node/227976)
Original code: (https://www.ozbargain.com.au/node/227931)
Edit: Think this is the cheapest it has ever been!
Edit: Formatting. Figured it out.
Edit 3: Thanks for updating me guys! It's back in stock!