By Harold Goldberg, Special To The Washington Post After all the hype and fanboy adulation, the time has come for virtual reality gaming to prove its staying power. That’s because PlayStation VR, now available for $400, has the chance to become the planet’s VR system of choice. Not as expensive as the Oculus Rift ($599), it attaches to any of 40 million PlayStation 4 systems already sitting in the living rooms of gamers around the world.