Once you sign up for a Free account, you can create as many websites and pages as you wish. However, if you want to add a custom domain (such as http://www.yourpage.com) to a site instead of a subdomain (such as yourpage.sitesgpt.com); you will need to upgrade the site. The upgrade costs $10/month or you can pay yearly for $96/year. Also, when you upgrade a site, all SitesGPT branding is removed so it won’t be known that you built the site on SitesGPT.
Let us know if you have any other questions.