The Vuforia video shows a concept headset from ODG and BMW.
Right now there aren't any cheaper AR headsets (worth buying), but there will be later this year. (and now a plug for my own startup: https://www.miralabs.io/)
There's a bit more information on our Facebook page (https://www.facebook.com/MiraLabs.io/), but we're purposefully not sharing much at this time. What I can tell you is it's a consumer-targeted mass market augmented reality headset for under $100. Apps for the platform are built using Unity.
Right now there aren't any cheaper AR headsets (worth buying), but there will be later this year. (and now a plug for my own startup: https://www.miralabs.io/)