@modem4g 

Hi, there is MR600 V3 product information on TP-Link Australia website as well:

https://www.tp-link.com/au/home-networking/3g-4g-router/archer-mr600/v3/

However, we technical support team don't have sales information, it is recommended to pay attention to the sales information on some online stores based on where-to-buy part of the official website:

https://www.tp-link.com/au/where-to-buy/

Or consult some local stores, hardware version is usually printed on the package as well.

By the way, sorry for that we do not sell product directly in Australia.