Now 915,000 over the course of four months doesn't sound like an impressive number, but keep in mind that the PlayStation VR is as expensive as the PS4 and it's basically an add-on accessory. That's not to mention that there aren't many games for it; and outside of Batman: Arkham VR and Resident Evil 7 there aren't many recognizable brand names for the system either, so a lot of people are buying it obviously for the novelty of experiencing VR.