Yes. In Australia, anything you buy from a company online is covered by a wealth of consumer protection legislation, which gives you the same rights as with any other online purchase.
Unfortunately, Black Friday brings out the scammers as well as the sellers. So be wary of unsolicited emails or links to deals on social media, no matter how legitimate they look: anything asking for card or login details may be a scam. Phishing sites do big business on Black Friday, so be extra suspicious – and if you’re on a PC, make sure your security software is up to date. Many security suites automatically block known scam sites.