Yeah, but that is not very visual, right? Is there any visual editor? Well, I’ve seen some, but not sure if I can upload my purchased template onto the editors I’ve seen.
No, not proper ones. There used to be programs like dreamweaver and Frontpage etc… with a visual editor build in. However these worked better (not perfect) with older html techniques that were used before the current html5. They can still be used but are not that visual anymore as all content flows in top of each other.
Maybe converting it to a simple CMS like this will be an idea?
Check out the preview and video.
Or did you refer to something like these? This is actually software for setting up user preferences and does not come straight out of the box like that. This is more for authors who want to sell HTML templates by themeselves.
Well hopefully this answer takes you further in the process.