[Raphmedia]

You need a mean computer.

Otherwise, lots of free room if you want to enjoy room scale VR.

If you want to really enjoy driving games, you want a good steering wheel. If you want to enjoy flying games, you need a good stick. Those two can get up to $200 each.

[bryanlarsen]

Controllers. People are still experimenting with control schemes, I expect to see lots of different options come out before things settle down.

Software. VR is a niche market, so prices may need to be high to recoup R&D until volume is there.

According to reviews, this is awesome. http://www.virtuix.com/ $699, plus extras.