A single copy version of Math Addict costs $19.99. In order to
purchase first download the software, if the computer you are intending to
install the software on is different that the computer you downloaded the
software on, copy the installation program to the PC you intend to use
the software on. Then select "Buy It" from the menu, you may choose to
purchase it over the internet, or by telephone. Using this license
options allows you to install the software on one computer, but with as many
users as you would like.