Found this in the catalogue I got in the mail today, seems to be the best deal available at the moment at 33% off. It seems any value cards, just buy three of them and you get one free. Commences tomorrow, and goes until 16th May. Will upload a pic of the catalogue ASAP. Enjoy!
Also want to add, I'm in Sydney, but I'm not sure how widespread this sale is. If someone can find a link online, please share.