This is like the third one of these I’ve written about and yet again this is U.S. only and while supplies last! So you’re definitely going to want to head over to the site and scroll down to sign up for these. It is fair to warn you that the quality might be severely lacking. The Conan one I received was very meh. If you compare that one to the one I got with a Nexus 6 that a friend bought and gave to me (the Cardboard that is, not the phone) it’s a huge difference in quality and build materials.
I also received another from another company for free and honestly I couldn’t even figure out how to put it together. That one was just awful and badly cut.
At this point my interest in Cardboard hasn’t waned but I’m giving serious thought to just buying a decent headset from a decent company. Cause you truly get what you pay for.