Now that I moved on from ST and WiFi devices I have a bunch of smart plugs for sale. All adult owned, from kid/pet/smoke-free home and in like new condition. Everything has been factory reset.
If anyone is interested let me know. Located in Ontario, Canada.
I'm a prior ST convert, and in my experience, Zigbee is a pain in the rear. My TP-Link devices never fall off the mesh, never. Zigbee is another story. While Kasa is 100%, I'd estimate my Zigbee is roughly 90% reliable, despite Zigbee "standards".
Wifi is great, until you have too many devices and I haven't see battery operated wifi devices, so Zigbee it is.