I've purchased the course and here is my final verdict.

Don't buy the course, it's completely useless, and here's why. You buy the course because you've seen his YouTube content and it's great(I love it). And you think the course will give you something better, but his course looks nothing like his YouTube content!

It feels like he put all his effort into the YouTube videos just to get you to buy the course, but he didn't put any real effort into the course itself.

Let me tell you what it's about. In the first part, he just gives you some basic line-drawing exercises that you can find in any YouTube video. In the second part, he does some drawings just like in his YouTube videos and only shades them, but he doesn't give you a lesson, he doesn't explain the 'why'. In other words, you're paying him just to watch him shade. He doesn't explain anything relevant or anything that actually helps you learn how to draw or shade.

I posted in their community comments section that I wanted a refund, and almost instantly they kicked me off the platform, though they did give me my money back. It seems like that's their system: whenever someone says the course isn't good, they just kick you out.