Amazon has a 3-pack of Etekcity Wireless Remote Controlled Outlet Sockets for $24.99. The coupon code “9938UOFF” drops it down to only $16.99 (free shipping w/Prime). That’s $59 off the regular price for these auto-programmable outlets and the lowest we could find.
They are simple to setup, just plug in and use. They work up to 100ft (works through doors, floors, and walls). They have a learning function allows you to match any remote and outlet to each other regardless of the frequencies. They have a built-in child protection feature and only cover 1 outlet.