Nice graphic showing the various companies trying to do this kind of thing.
Musk has the cheapest per pound to orbit, of anyone.
http://specials-images.forbesimg.com/imageserve/55255c4fe4b0ffa93fd28f34/0x600.jpg
SpaceX is the only one on that chart that will go to orbit. The other companies, like Blue Origin for now, are suborbital tourism.