Amazon has their Amazon Basics Smart In-Wall Outlet for $17 (regularly $21.99) for a limited time. Shipping is Free for Prime Members or pad your order to $25 or more and score Free Super Saver Shipping.
The Amazon Basics Smart In-Wall Outlet offers 2 individually controlled outlets that are tamper resistant. It supports 2.4 GHz Wi-Fi and works with Alexa only. There are no hubs required.