Welcome to the forums :)
Actually this has been discussed on the forum a number of times. Generally so long as your supplier is an authorized dealer or seller of the said brand names it is relatively safe to resell them. So if you can please ask your supplier to provide you with proper documentations, such as a certificate of authenticity or a distribution license.
However, some brand names limit the distribution of their products to certain countries only, so you might want to check directly with the brand owner about distributing in Australia - please refer to the link I mentioned in a previous post - Link hidden: Login to view
Also, I think Marc's post on selling brand name products sourced through liquidations will be quite helpful too - Link hidden: Login to view
Here are similar posts for your reference - Link hidden: Login to view Link hidden: Login to view Link hidden: Login to view Link hidden: Login to view
Hope this helps :)