>>274158925
they're unironically far better than you would expect while also being terrible.
They use the same screens that are in the WMR screens but are locked to 60hz from what I understand. You can probably overclock them.
They do not have 6dof but you could make them 6dof with a single vive tracker, a kinect, or nolo vr, or driver4vr, kinect2vr, etc. 
They are fully SteamVR compatible.
Extremely good for art installations on the cheap.