Selling Open Source

For the last few years i have been developing a open source framework for text based games, would i be able to sell this on here, but providing extra services here i.e. extra support, different themes and plugins etc …

I’m just not sure if this is allowed, i obviously don’t mind referencing the free project. Im also going to be selling my premium themes and plugins here but i dont see an issue with that. (please tell me if this is wrong)

Is better to open support ticket and Envato will tell you if is ok.

Good luck