Found this really interesting sale @SAKS Fifth Ave who ship free to Australia on order over AUD $175.
Over 1900 styles listed under USD $50 or AUD $88 with up to 70% off discounts.
Some really good prices at brands like Polo Ralph Lauren, Bardot, Kappa, New Balance, Chaser and many many more. Just be careful while picking sizes as US sizes are different to Australian sizes but you can find conversions online.
Link: https://www.saksfifthavenue.com/sale?cgid=root&pmin=00.00&pmax=50.00