SHIPAUG20
e.l.f. Australia is offering free shipping to Australia and New Zealand with a minimum order of AUD $20. Not as good as min order of AUD $10 last time but better than the usual minimum order of AUD $60.
If you've never heard of this brand, they are known for selling quality products at affordable prices. They are also cruelty-free. Their make-up brushes are also known to be reliable.
Check out the product reviews on beautyheaven on what to try. There's also plenty of blog posts on which e.l.f. products are good dupes for much more expensive brands.