Dick Smith have the Vostok 12,000 BTU Portable Air Conditioner (3.5kW, Reverse Cycle) for $349 delivered. Good price
They also have the
Vostok 14,000 BTU Portable Air Conditioner (4.1kW, Reverse Cycle) For $379
https://www.dicksmith.com.au/da/buy/vostok-14000-btu-portabl…
These seem to be a rebadged Rinnai which is cooling only for $699 and $749 for the 4.1kW
https://www.thegoodguys.com.au/rinnai-c35kw-cooling-only-por…
I bought the 14k last time it was a hot day for like $420. Only used it once, but it did the job pretty decently (if loudly).
God damnit.