Hello! I just discovered this program today, and although it's very interesting I've decided against buying it and I thought you might be interested to know why. If this type of feedback is unwelcome then don't worry about reading or replying. I don't mind. Although what I have to say is harsh it is meant as a tool to improve, not as a way to be hurtful, so do what works best for you.
The main reason I decided against buying is that the results are not usable without extensive external editing. The program is great as a starting point for generating ideas, but I already have access to free sprite generators that can do just that, and in the palette I want to use. Spending $20-25 on a program that gives me ideas is just far, far too much. A lot of this could be solved by understanding what goes into good pixel art and helping the generator create that. Having shading options that don't involve gradients or adding noise would go a long way. Maybe something similar to a bevel with a hard pixel edge? I think some minor low color count anti-aliasing could be done procedurally as well. But really, just having different chunks colored with a different hue can do some cool things, especially if you can limit how many are generated in each sprite.
The second reason was the price, and not just because it would simply be a starting point. Even imagining this as something that could generate usable sprites without an external editor, it doesn't compete well with existing programs. Aseprite is $15, Pyxel Edit is $9, GIMP and the other generators I've found are all free. Yeah, none of them does what this does, but they have in overall more useful features. Oddly enough, if your price point was $15 I wouldn't have questioned the price at all. I don't know why $10 (or $5 on sale) makes such a big difference, but it does.
I will probably be deleting the free version as well. The 1 bit mode is an obvious limitation, I don't fault you for using it for your demo, but I don't think it gives a good indication of what's possible in this program without inclusion of an alpha channel or having a total of 3 colors so that you can see the body.
The way a user can draw regions for indicating where and when the program creates the types of variations is brilliant. There is so much potential for this idea. Sadly, even after watching the video I haven't got a clear understanding of which element does what. Some documentation on that is going to be very important.
I wish you luck on this project.