The information I could find about the Daz3d Standard License Agreement states:
Whenever you purchase 3D Content from Daz, it comes with certain
rights that allow you to use that content. Some of those rights
include the ability to:
- Render Images
- Render Videos
- Render HDRIs> and/or Virtual Reality (VR) scenes
Any of these that you produce and
render out are completely owned by you, so you can use them
commercially, modify them, sell them, or promote them, as protected by
the End User License Agreement (EULA). This is because the end product
is a render (your individual artwork) of the 3D Model, as opposed to
the actual 3D Content.
When you should get an Interactive License:
Certain applications of models from Daz 3D require an Interactive
License if you want to use that product in a particular way. Any app,
game, or video game where the model changes depending on what a user
does requires an Interactive License (example: if the 3D Model moves,
bends, or walks based on an action the user of that app or game
makes).
In general terms, it sounds like if you generated your meshes completely on your own, you should be in the clear to use them commercially. That said, this is not legal advice & you should consult a qualified legal professional.
Also, the information above doesn't include anything about textures / materials. I suspect the situation is similar - if you're using things you developed yourself, you're probably fine. If you're using materials from their marketplace, you'll need to check those rights seperately.