In The Netherlands recently devices of LSC Smart connect are sold at very low prices. These includes color lamps, white ambiance lamps, smart power plugs, etc. There are solutions to use the local API of these devices (see e.g.https://github.com/codetheweb/tuyapi), but no native openhab2 binding yet.
I started developing one. If anyone is interested please check it out at https://github.com/wvissers/openhab2-addons-tuya and let me know.