Just got an email from Nike advising about a 40% off sale at factory outlets storewide in NSW.
4 DAYS ONLY
Available from Thursday 5 March until Sunday 8 March at Nike Auburn and Birkenhead Point Factory Stores.
I'm unsure about other states as I only get emails for NSW.
My experience says to go early, like 10am, and to not hesitate to ask staff to check sizes as on many occasions there were still more sizes out back.