I wouldn't care if this apartment was painted with 24k gold, I wouldn't pay $8.6 million for it. Imagine the kind of home you could build with that kind of money .
According to the account on this property website, after the graphite paint went down, the apartment's conductive envelope was extended by connecting each floor with wire tape to each wall. Then each wall was connected with wire strips to the ceiling, and every window was coated with a film of EMF-blocking polymer. The idea of this elaborate rig—known as a Faraday cage—is basically to block the energy from electric fields by channeling it all around the apartment, but not through it.