There are two kinds of Licenses, Regular and Extended. If your end product is going to be free to the end user, then you need a Regular license. When the end user need to pay to use the end product, you need an Extended License. All of our products are sell through Envato Market. Therefore, as a customer you most follow the following criteria:
"The regular license states that the purchased product can be used only for one domain or client. Each use of the product requires a separate license. This will help us to continue supporting our products and providing free future updates.".