Kasa Smart Plug Mini with Energy Monitoring, Smart Home Wi-Fi Outlet $13 @ Amazon
Be careful on the one you get. This link for the single is the KP115. If you click on the link for the 4-pack, it is the EP10, which does not do energy monitoring. EP25, KP115 and KP125 only do energy monitoring. As far as the power strips, only the HS300 does energy monitoring…found out the hard way on the 3-outlet strip.
I guess Amazon is clearing out inventory on the KP115 to make room for the new KP125.