CNC Shark Forum

This link should take you right to the product itself and couple of accessories:

http://www.rockler.com/search_results.c ... submit.y=0

You may also want to go to http://www.vectric.com/ for examples of what people are designing using the software.
Be aware that not all the designs have been done using the Shark system, but the galleries do show the versatility of the software.