HTC Vive, Oculus Rift, and Windows Mixed Reality headsets... and it seems like Windows Mixed Reality headsets are available for around $200 on Amazon. Wow, we live in the future. I guess the main cost here is the PC attached to them... probably costs about $500 minimum if I'd have to guess for something with the specs required.
[edit] wow, you can get an Asus pre-built desktop for $440, damn! i5-7400, 12gb DDR4, 2TB HDD, graphics good enough for VR... wow. Anyone know if it's possible to build your own for a competitive price, or if that'd drive up the cost? I remember the days when it was cheaper to build your own...