If they would, how much do you think they'd pay for something like this?

What is 'this'? If it is an 'it', people would pay nothing for it. Sorry.

It seems the OP used the wrong link. It links to a webpage, not to an image. This is the image; And yes, I do think users would buy something like that. :) Perhaps 500k for it, since it's only lineart?

500... 500k? Seriously? You think so? That's... That's a lot... :3

The lineart is a bit simplistic, so it would probably go for less than that. I'd price that at around 100k.

I agree, something more within the 250k-350k margin. But people would definitely buy this c;