I just bundled the pixel art brushes I made for Procreate together with videos, source files and other resources for just 5$. You can get this pack at:

https://firezhn.itch.io/pixel-art-brushes

https://firez.gumroad.com/l/spbul

https://www.patreon.com/posts/102926825

I would recommend getting it through Patreon so you can get all my other rewards too. I can provide a key for either itch.io or Gumroad once you become a patron