I want to get power receptacles controlled via web and buttons. Specifications: I need an one-room system, wireless.Electric power system here is bad for signal transferring. WiFi (Z Wave, ZigBee, etc), BlueTooth frequencies are fine. Ok price, up to 25$ per receptacle (not including other parts).Only on/off for controlling simple devices plugged in. Status isn't necessary.Also, please, don't propose inflexible closed undocumented and proprietary protocols' devices. Here's and, not or. For example, Z Wave is proprietary but seems ok. Open source solutions which are free but are a coder's scribbles with a long dead community aren't good for me. The receptaplaces controller functional should be expandable with sensors, actuators, etc.Difficulty level: mid-tier, I'm an IT guy, but not a hardware guy. So, no circuits' designs from scratch, please, anything from the arduino level is ok. Please, give me the recommendations with a rough pricing and links. 
Smart Home: controlled power receptacles
wireless;power supply;automation;power control;smart device
This one's pretty easy, really. Pick up the TP-Link HS100 Wi-Fi Smart Plug. It was the first device I found when I searched for smart outlet.It is $25It is bog standard 2.4ghz wifiIt turns stuff on and offIt is still made and supported by TP-Link, which is a large and well-known networking products manufacturerIt's easy to use - there's an app for that as it were. 