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The switchbot mini plugs are on sale for BF:
$ 29.99 – 25% clippable coupon on page =
$ 29.99 – $ 7.50 = $ 22.50
Which comes out to $ 5.62 per plug.
These plugs offer energy monitoring, and can be flashed to Tasmota using switchbota:
https://github.com/kendallgoto/switchbota
Amazon link:
https://www.amazon.com/dp/B09YV2L3MN