Ozbargainers hate that the smart plug blocks the adjacent sockets. This version doesn't work with Apple Homekit.
If you can live with that, this is a good price for 4 smart plugs with energy monitoring.
Camelx3 shows that these come down to $50 frequently, but the last time was early April.
EDIT: - I have connectivity problems out of the box with all 4 plugs. One plug shows on the app, but as disconnected. The other 3 dont show up in the app at all. Your mileage may vary.
A warning from my own experience - I bought a pack of four and three have had an issue where they randomly start clicking on and off multiple times a second - each time it happened thankfully I was home, but I had to rush to my entertainment unit and yank the plug out quickly before it could potentially fry my power board or something.
Never buying from this brand again - I forked out the extra $$ for the TP-Link Tapo plugs and they've been great so far and are a slim form factor that only takes up one socket.