With 50 euro for a power supply, 100 for a sensor conditioning module (without the sensors!), 300 for a base station and 800 for a complete starter pack, I don't care if it is open source or not, it is way out of budget for the casual hobbyist. There are already enough different alternatives
, most of which appear to be vapourware. Home automation seems easy enough that many people who follow the IoT hype start their own project.
But we don't need more standards
, we need less. The best would be if one of the existing protocols
(not necessary that one) would win, so that people could mix and match their own components, which don't have to be more fancy than some arduinos and RPis