Here is an overview of the 2 license types we offer;
A user license grants that "user" unlimited theme installations on domain names that "user" owns and is the sole owner of, a license cannot be resold or given away.
A developer license grants that "user" unlimited theme installations on any number domain names for their own use or as part of a paid project. The developer license cannot be resold, given away or used to resell our software.
The developer license is only required if you plan to sell websites, for example, website developers or users who are flipping/building websites for resale.
If you only intend to use the theme on your own websites for your own business, a single user license is all you need.
Please refer to this page on flipping/selling websites;
https://www.premiumpress.com/doc/can-i-sell-flip-websites-using-your-themes/