Free shipping over $99, otherwise $9.95. Not a lot in the 'sale' category, these are my picks:
Jink 2 - https://www.clarks.com.au/jink-20947.html - $39.20
Desert London 2 - https://www.clarks.com.au/desert-london-5789.html and https://www.clarks.com.au/desert-london-5793.html - $63.20
They also have women's and kids' shoes.
Here are the T&Cs:
*VIP Preview - Take a Further 20% off Sale Items is available Online Only at www.clarks.com.au. Offer is only available on styles in the Sale category. Excludes prior purchases. Cannot be used in conjunction with any other offer. Discount applied at checkout with use of code: TAF20. All offers are correct at the time of publishing and may be subject to change without prior notice. Offer ends midnight, AEST Wednesday 30 May 2018
Also 5.60% cashback with cashrewards.