I don't know about "prototype", but If it helps, the Kickstarter was $2k (I remember it as a grand, but I guess my memory was wrong) for the big(now medium) 15"

I don't know about "prototype", but If it helps, the Kickstarter was $2k (I remember it as a grand, but I guess my memory was wrong) for the big(now medium) 15" ones, and $400 for the small 8". After it arrived, I kinda regret not gambling on the bigger one https://www.kickstarter.com/projects/lookingglass/the-looking-glass-a-holographic-display-for-3d-cre/rewards https://www.kickstarter.com/projects/lookingglass/the-lookin...