TP-Link HS105 Mini Smart Plug (1-pack) $15.82 on Amazon

Seems to be the cheapest this season.

TP-Link Mini WiFi Smart Plug, Wi-Fi, Works with Alexa, Only Occupies one Socket (HS105),Wall-Light, Electronic-Component-switches, 1-Pack

https://www.amazon.com/dp/B01K1JV…dCbJ93KJH0