The brand-spanking new website sneakily went live overnight with millions of products across more than 20 different categories including Books, Music, Clothing & Accessories, Electronics, Kitchen and Baby.
Then there's up to 30% off on select toys, including Barbie, Batman, Hot Wheels, Disney Cars, Fisher-Price, Thomas the Tank Engine, and board games.
The news comes shortly after the ACCC's announcement which informed it would not offer protection for "uncompetitive" firms, even if it meant they could fail at the hands of Amazon Australia.
One-month supply packs of Huggies nappies are going for $65 with free shipping.
Australian customers can also access Prime Video and Twitch Prime today.
Chairman of the Australian Competition and Consumer Commission Rod Sims last week said the arrival of Amazon would be good for consumers, but less so for incumbent retailers.
Australian tech startup Koalasafe has been selling its product via the Amazon Marketplace since 2015. The retail giant is bringing its promise of next-day delivery to Australia as well with Priority Delivery, and free delivery is available for products worth over $49. Globally, approximately 50% of Amazon's total units come from Marketplace sellers.
Amazon Australia's country manager Rocco Braeuniger, who was appointed in August, says Amazon will be offering "millions" of products from well-known Australian brands as the company enters the $300billion retail market.
While Amazon's launch is likely to shake up the retail environment, the fact that it has just one distribution centre for the entire country means, at first, the service will not be almost as comprehensive as the United States or UK version.
"By concentrating on providing a great shopping experience and by constantly innovating on behalf of customers, we hope to earn the trust and the custom of Australian shoppers in the years to come", he said. "The result will be an ever-improving customer experience driven by the regular introduction of new products and services that we hope customers will love", Braeuniger added.
Amazonhas corporate offices in Sydney, Melbourne, Perth, Brisbane and Canberra which are home to more than 1,000 employees. Both benefits are available for an introductory price of $2.99 United States dollars per month.