According to the website of ALDI Australia, there is a problem about shipping of the special buys products. Since the products are not in stocks yet, apparently they decided not to advertise the deals. They announced the problems on their website and we can actually see what's going to be on sale. There is the product range that might have the same trouble.
There is a stock checker feature of ALDI's website. You just enter the name of the product and postcode to check stock. Visit stockcheck.aldi.com.au for that information on stocks. See the ALDI Catalogue deals for detailed information about the products.