I am aware of some people doing it in Melbourne, but not the finer details, other than its seems the "agent" is using a corporate deal with a North American program (a program not often mentioned on AFF, so no people, its not US or AA).
However, I am unaware if the agent coordinating it is in Australia.
The local Australian network of users does seem to be growing, and I know of people who have successfully travelled on these tickets. They are paying in the range of 50% off the full J prices, but are not earning FF miles on flights.
I note: A key component of many North American FF programs is that, although, redemptions may be made for anyone (i.e. ticket holders don’t have to be related family members) these tickets may not be bartered, traded or otherwise sold for profit: Which would seem to be the case in these arrangements.
The question is whether anything more than lip service is paid to this provision, as FF program management revenue/profit goals would seem to be at odds with restricting the practice, resulting in a blind eye being turned?
As burmans said, ask more questions directly from people who have used this service, for a better assessment.