If you don't know what Google Cardboard is, it's Google cheap VR alternative that uses your smartphone as the viewfinder. More info here https://developers.google.com/cardboard/
This is a cheap way to test out VR. You will need an Android phone. (Forget what it says about iPhone and Nexus 6. LOL)This kit comes with everything you need except the NFC tags which aren't required anyway. Bought one and it worked out about $11 AU delivered. (regular price $13 US) Will see how it goes
Included are:
1 x Cardboard
1 x Rubber band
2 x Magnets ( d=2cm)
2 x Lens (d=2.3cm)
2 x Pairs of Velcros
Some videos of how it works:
http://www.youtube.com/watch?v=SxAj2lyX4oU
http://www.youtube.com/watch?v=wZXjoMMigJU