There isn't a set price on this reference device, though a product manager said it would cost around $600 for its partners. Commercial devices could range between $500 and $600. That's a lot better than the Vive or Oculus, which require expensive PCs too.
As a testament to its rough stage, the unit had no method of detecting whether you were about to hit something. Qualcomm said one of the front-facing cameras could be used as a pass-through lens, letting you see what's in front.