In my store you can find Photoshop and GIMP brushsets and also seamless textures. You can use all my products for commercial and private purposes. The brushsets also include a certificate for commercial use.
9 Clouds Brushes from Real Clouds for Photoshop, GIMP & Procreate
20 Ink Grunge Brushes - Brushset - 4k - Hand-Painted - Not Cut - Commercial Use Allowed