INITION: New Video & Cyborg Store
A new UK based store, INITION, is now selling video display products like Head Mounted Displays and Heads Up displays. While they're obviously not the only place on the web to buy this kind of gear, it is nice to see more outlets. It's the kind of thing that will ultimately help competition in terms of price wars and drive for manufacturers to build more reliable and high tech systems. The best thing about their website is that you can do comparison based on specs, so you can sort by price, resolution, etc.
They're also selling haptic feedback devices, VR gloves, motion tracking systems, and even a few wearable computers. I definitely recommend checking them out.