I got a number of different quotes in Sydney as I wasn't sure which direction I wanted to go.
$700 for wall charger install and 32amp single phase circuit. No wire run as I had this provisioned during house build.
$1400 for wall charger install, 3 phase upgrade of meter box, new meter (lines from street already run), 32 amp 3phase circuit. Also no wire run required.
I went with the 2nd option as I occasionally require a full recharge overnight and it would useful to add serious kms on quickly if needed, overkill for now but I'm future proofed if cars ever support 22kw charging.