Monolith Electrostatic Headphone by Monoprice

I was suprised to see this on the Monoprice website. Their on sale for 350$ Regular 629$. But i was shocked to find there doesn’t seem to be any reviews out there. The reviews on the website say they sound great. Does anyone know about these? I’m seriously thinking of buying them.

https://www.monoprice.com/product?c_id=304&cp_id=30405&cs_id=3040502&p_id=33455&seq=1&format=2

They are not good imo. Not worth it.