The Hub is no shop. However, for each item you could create a resource page here on the Hub (Paid/Clothing section, I guess) and set the download link to a direct link to your the product on whatever store you are using. Most commonly used is Patreon around here, since you need the account anyway to get VaM in the first place. However, if you can upload VAR packages to this 3dshards store and link to it from the Hub, that may work, too.
General advice:
- Provide your content as a VaM VAR package.
- Follow the various guides to make clean, error-free VARs.
- Don't contribute to the dependency mess.
- Test your content in a clean VaM install before releasing it.
- Respect other people's licenses. Within VaM community, but also outside, like Daz3D.
- Provide honest screenshots (or video) from VaM to promote your content.
- It's recommend to have some precentage of your content as free samples. It simply allows people to better judge the quality you produce. Also scene builders need something to work with, since having paid scenes that depend on separatly paid dependencies is frowned upon. Sometimes scene builders might also pay up to "free content" for the community.
- Read the community guidelines
- Some content types are not allowed (violence, child porn, etc.)
- There are restrictions how many content posts/promotions you are allowed to make within a given time.