Another option if the Aussie sites are out of stock:
USD$99 with free shipping (delivered from USA).
Ordered from them a few months back with no issues (price was USD $79 back then) and works perfectly.
Only have single phase myself but had the sparky install the 5 pin 32A 3 phase socket with just L1 connected. Get the full 7kw no issues. And if I go rural can use the plug at showgrounds etc. If I ever get 3 phase, the sparky can just wire in the other 2 phases which are taped up in the fusebox and attach a socket to a Gen 3 Tesla HPWC and install it next to it.
I ended up going with single phase 3 pin. While I realise that 5 pin three phase sockets are probably more widespread, it would have cost me a lot more to go three phase, especially as I need around 30m of cabling from main board to garage. As I saved more than $155, it will still be cheaper to buy a 3 phase 5 pin tail at some point in the future if I'm travelling.
I used it today with Autarkie Manager and it made charging the car from excess solar so easy. No more heading out to the garage to switch cables or change charging current.