Here's the link to B&H Photo who appears to have the best price for the quadcopter. You have to supply your own GoPro camera.
On a side note, I am planning to purchase this exact same quadcopter, but opted to purchase a lesser unit first so that I could learn to fly it. Now I've spent $50, and I've learned it is extremely tricky to learn how to fly. I hope to show up a Quartzsite next year with my quadcopter, as well as hours of experience so that I can hopefully shoot photos as good as these.
http://bhpho.to/17X1mhs