I just order my ESP8266 bare bones from Banggood, about $3, free shipping and if you order them in bulk you save even more. The ESP8266 works great as a standa

I just order my ESP8266 bare bones from Banggood, about $3, free shipping and if you order them in bulk you save even more. The ESP8266 works great as a standalone device and you can even flash it with the Arduino firmware, though I prefer NodeMCU.