https://creativemarket.com/squarepack/754035-Artsy-Paint-Brushes-Kit

You'll get (awesome)
15 Illustrator paint brushes (.ai) laid out in a nice spread sheet
Compatible with Illustrator CC, CS6, CS5
15 Photoshop brushes (.abr)
15 PNGs in high quality (6000px width, 600dpi)
Installation guide

Bonus
8 Grunge high quality textures
2 Demo psd files from the presentation, that you can use however you want :)
Fonts and instructions.txt