The most popular license, the Regular License allows the use of reveal in one single end product, which end users are not charged to access or use. You can use reveal directly on your own website or, if you’re a freelancer, you can create the end product for one client whose end users will use the product free of charge. You can charge your client to produce the single end product. In production, you will use the minified version of the source files. Distribution of source files is not permitted.
The Extended License is suited for Web Application or Theme Developers and it allows use of reveal in one single end product, which you or one client may sell to end users (charge end users to access or use the end product). Distribution of source files is not permitted.
By purchasing an Extended License, you do not get a multi-use, multi-domain, multi-client or developer license. The Extended License is still limited to a single end product, but you can re-sell that product, such as a theme or paid application.
You can use reveal in your ThemeForest item if you purchase one Extended License for that purpose. This means you will need to purchase one Extended License for every single ThemeForest item you upload.