Hello Jaazmine
I am afraid but you cannot get the RVSiteBuilder without purchasing the hosting package because RVSiteBuilder is a part of the cPanel control panel, that is offered with the Linux hosting plan. In case you would like to access the RVSiteBulider, it is crucial to have a Linux hosting account. You will control the website building process.
With an hosting account, RVSiteBuilder can be accessed from anywhere with an internet connection. You can view RVSiteBuilder tutorial here –
RVSiteBuilder Tutorial | Web Hosting UK