Kindle e-readers are on sale, from the cheapest at $109 to the Kindle Paperwhite from $179 and the all-new Kindle Oasis from $389.
Customer orders will be fulfilled from Amazon's new centre in Dandenong South.
Retail analysts at Citi believe large local electronics retailers JB Hi-Fi and Harvey Norman will be among the hardest hit by the disruption the global behemoth is expected to create.
Australian retail shares have fallen sharply since Amazon confirmed plans for the country in April.
Although the catalogue at the moment seems limited, Amazon Australia's county manager, Rocco Braeuniger, has said that "millions" of products from Aussie retailers will be sold on the digital platform, with a long-term commitment being made to the Australian economy.
Amazon is offering customers free delivery on eligible orders above $49, and one-day delivery in select areas across Australia.
"There is a massive opportunity for a differentiated experience".
It's assumed the categories on offer will be expanded in the coming month.
Australia has always been home to Amazon-registered sellers, but until Tuesday they were limited to sending goods offshore because the Seattle conglomerate did not have a warehouse in the country of 24 million people.
According to Sims, though, the regulator encourages "vigorous competition on its merits - and this will see many firms fail". "The result will be an ever-improving customer experience driven by the regular introduction of new products and services".
Amazon Prime Video and Twitch Prime are also available to Australians as of Tuesday. Amazon was meant to launch on November 24, this was meant to coincide with the United States black Friday spend-a-ton. experts in this sector have said that the launch can be prolonged up to next year. Local retailers like David Jones and Myer have been scrambling to launch their own "premium" in-store services and price matching strategies or revamped online stores ahead of Amazon's arrival.
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