Cheap or free 3D model painter

I am looking for a free or cheap software to use to paint 3D models made in sculptris and blender. Any suggestions help!

Thanks!

Gimp is a free alternative to photoshop, and blender has built in mesh painting tools, and if you use their material graphs you can create procedural textures that give you automatic edge wear and dirt in the ambient occlusion, and you can bake these out in blender, and paint over them in Gimp. but if you don’t want to mess with procedural textures, you can just bake the Ambient Occlusion in blender and paint on it in Gimp.

https://www.pcsteps.com/1566-make-gimp-look-work-like-photoshop/
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Quixel mixer is free.
Adobe Substance is $170 on steam.
Blender has a texture paint mode.

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