I recently got a TP-Link, HS100 Smart Plug from the local Amazon store. (Yes, there are some Amazon stores around the country.) The manager suggested the TP-Link over the Wemo, (which they also sell) because they get more complaints/returns of Wemos and hardly any for TP-Link; therefore, the Wemo is "better" and more trouble free. Plus, the TP-Link cost less; $30. Sold.
Easy to setup with the app for Smart Plug and easy to setup on Alexa. No expensive hub to setup. I like the Smart Plug a lot until I saw the newer model Smart Plug Mini, HS105 a few days later. It is currently in short supply, but I found some and I like it better, because unlike the original plug, the Mini only covers up one wall socket rather than more than one like the regular Smart Plug does. This model is $10 more, but worth it to me, so I bought two, and they are now set up in living room where there tends to be a shortage of open sockets available. Both work equally well for turning lamps on and off.