Thanks for your question. cPanel is able to offer free SSL as they have a special partnership with an SSL Certificate Authority.
With our partnership with Website.com, we were able to negotiate the cost of SSL services down to only $3.50/mo. Typically SSL services with Website.com can cost up to $159/yr.
Alternatively, to utilize the free cPanel SSL, you can build and host your own website on cPanel.
Please let us know how you wish to proceed and we can help you enable SSL service for you site.