Relativ - Build your own advanced VR headset for $100
I’m 16 and I built my own VR headset with my best friends, Jonas Ceccon, Gabriel Combe and my math teacher. And it ended up costing us $100. Basically a VR headset consists of two things, tracking the player movements and rendering a stereoscopic view (with illusion of depth) of a 3D environment according to the player movements.
Relativty - An open-source VR headset for $200
Relativty, an Open-source VR headset with a 2K 120FPS Display, SteamVR supports, and experimental room-scaling. You can build it for $200.