I produce Blender add-ons and sell them for free and for a fee.
3DCG designer / modeler in Japan.
Since the activity base is twitter,(My response will be faster on twitter)
The only sales sites I use are "blendermarket.com", "gumroad.com" and "booth.pm".
■ Twitter: https://twitter.com/Bookyakuno
■ My Site | 忘却まとめ : https://bookyakuno.com
■ Old Addon - Github: https://github.com/bookyakuno/-Blender-
■ Portfolio: https://www.artstation.com/bookyakuno
■ Support / E-Mail: