$7k is for the whole bike, there is over $2k worth of shocks on the bike alone. It does sound pretty interesting...http://g-boxx.org/06-faq.html#01
- ability to shift without pedalling!
- totally sealed so less maintenence
- no deraillure to break
- no rotational weight on rear wheel (freewheel and cogs are in box)
- moves weight of cogs and freewheel to center of bike
The site doesn't list any disadvantages of course, but they probably are weight and if it breaks you will be sending it in. It also doesn't mention how many gears you have, but its probably not many. This is probably why its going to be limited to DH only, weight and low gear count.