Australian plug/spec 5V/3A USB-C wall charger. Add $7 for shipping.
Not easy to find these at a good price (normally $29.95). Personally, I trust Jaycar but happy to hear if anyone has experience with this model (no, it hasn't been Benson tested)
Model number: MP3445
Input Voltage: 100-240VAC
Output Voltage: 5VDC
Output Current: 3A
Protection: Short Circuit, Overload, Over Voltage
Remember this does not include a USB-C to USB-C cable but you can find 1.8m local stock here for $14.99 (inc. fast local delivery): https://www.cablegeek.com.au/shop/cables/usb-type-c/monopric... (also not yet Benson tested to my knowledge)
This Jaycar charger appears to be a decent alternative to the official Australian plug/spec Google charger if your USB-C device needs 5V/3A. This is $55 (delivered) but does include a 1.8m USB-C to USB-C cable: https://store.google.com/product/usb_type_c_18w_power_adapte...