Most of our demo pages were a joint creation of our content builders and designers, so unfortunately not every page found on our demo sites has its own PSD file.
On the other hand, there are certain pages, including main home variants which do have PSD files available, however these are not included in the theme ZIP file which you obtain from ThemeForest. Nonetheless, it is possible to get these files by contacting our support team.
All you should do is send in a ticket explaining which PSD file you require, and our agents will be happy to assist you if said PSDs are available.
PSD files can be helpful if you wish to create your own version of the theme – you can change the colors, images and fonts within certain elements, but keep in mind that a certain level of Photoshop skills are required for this.