Hello! What’s your background, and what are you working on? I’m Mike, the CEO and founder of Epic Plugins and Epic Themes. Through these websites I sell premium WordPress plugins and themes.
Epic Plugins is for users who want to add extra functionality to their websites. It features over a dozen plugins, like Social Gallery Photo Viewer, which allows the site owners to make their images "social" (such that the images open in Facebook-style lightboxes when clicked and can be commented on, liked, and shared on other social networks).
Epic Themes, on the other hand, is for those who want a completely new design for their website through a new WordPress theme. The themes we currently sell are quite niche and focus on content curation and content ranking (similar to how Reddit ranks the homepage, or how Product Hunt ranks their submitted products).
In fact, two of the most popular WordPress themes are designed to allow anyone to quickly use WordPress to create a website just like Product Hunt or Reddit. While not direct "clones", they’re used by customers to offer niche websites with similar functionality. (The hottest hotels, for example, or the top productivity tips.)