Virtual Reality Systems

[VolnJC]

I watched a really cool Periscope where a guy climbed Everest and other cool places. I'd like to get one if they aren't terribly expensive to use as a homeschool tool and just for fun. Are the travel ones fairly realistic? Where is the best place to do research and buy the systems?

Here is the link to the scope
https://www.periscope.tv/w/1OyJAvDlanexb