deal on Google Cardboard Phone Resin Lens 3D Glasses $7.49

Saw this deal for Google Cardboard Mobile Phone Resin Lens Virtual Reality 3D Glasses. I thought it might be interesting since I've been hearing a lot about Cardboard Applications and always wondered what they were about. So it seems you use them with these glasses and so they give you a 3D view. I read that in order for this to work you have to have Android 4.1 on your phone, or any version above that. You can find them at banggood.com for $7.49and delivery costs are included. Hope someone finds this useful. I'm thinking of trying them to see what all the hype is about http://www.banggood.com/Novelty-DIY-Cardboard-Virtual-Reality-VR-Mobile-Phone-3D-Glasses-p-940425.html?utm_design=12