Bauhn Universal Travel Adaptor Kit on sale at Aldi for $9.99. Originally $19.99. I found this at Scoresby Victoria store. There were over 20 in stock and some were scattered around the store in other display areas.

Features:

Can be used in over 150 countries

Tested to AU safety Standards

2 x AC sockets

4 x USB charging ports

90cm Cable

incl carry case

This is one awesome product. I've got an older version that has traveled with me many times. Still going strong!