Yeah, I've got the original PowMr 5k5 one, and it's been providing 80% of my homes electricity for the past 2 years. It even managed to shut itself off when my 14yo niece shorted the live and neutral together while using an extension lead. No bang, no shock, as fast as an RCBO.
Had to turn all the breakers off and on to restart it, but that was the only shutdown in those two years.
Paid 13kbht for it and that included the WiFi dongle. Fan is a bit noisy sometimes is the only complaint I could pick with it. A solid bit of equipment that does the job.