HEN (Home Education network) is registered with Mathletics as a school. The cost of the program for home use is usually $99 per student per year but HEN members can now access the program for $30 per student per year. Mathletics users can also elect to enrol in the Spellodrome programme at the teacher rate of $15 rather than the public rate of $50.
http://www.home-ed.vic.edu.au/2008/11/20/mathletics/