I would like to sell MyBB Themes

IS there any chance that you include Forums, like MyBB Themes as category?

Yes, there is a chance

It does depend on the popularity of the CMS/forum.

How many themes do you have? Do you have a link to some of your work?

I have my own MyBB Related Forum and a special website where I sell Premium MyBB Themes. I am ready if you want to remove any item from my website, that potentially would be offered at Codester.

My Forum:
https://netpen.info

My MyBB Premium Themes:
https://netpen.club

No need to remove any items on your own site. Codester does not require exclusivity like other marketplaces.
The only thing to make sure is that the themes uploaded on Codester are not priced higher then on your own site, making Codester the expensive alternative .
Other then that you are free to keep selling as you are already doing

We will be adding new categories in July. If you upload your work by then in any sub-category in "themes". We will create a MyBB Themes category.

Thanks a lot for clarification.

You are welcome. If there is anything else, just let me know.