With a private SSL you have a security certificate issued exclusively for your website. By using a private SSL you will avoid the annoying warning message that pops up whenever a visitor tries to access your website via a secure connection (HTTPS).
A private SSL is required, if you plan to set up an online shop and receive payments online. It will also make your customers and visitors feel confident when they submit any sensitive information on your website.
The private SSL price includes a private security certificate registration and set up of a dedicated IP address. You can review the SiteGround SSL offers on the following page: