I just bought two of these: https://smarthomedirect.com.au/product/zigbee-smart-plug-with-repeater/ as I was sick and tired of flashable wifi plugs dying after 12 months (also they are getting harder to find).
The ones I was sent look nothing like the picture. They are actually these: Climax Power Plug PSM-29ZBSR Zigbee compatibility with an AU outlet.
Specs and approvals seem the same.
No issue pairing with Zigbee2mqtt. Power updates every 10 seconds, switch has no lag.
The only thing is the price. $100ea 
They had better bloody well last twenty years.