Speaking as someone who’s imported eroge and bought eroge in Japan, and not as a MG employee, I have to say that $40 for a good eroge isn’t a good price–it’s dirt cheap. Good games will go for that or even more, when USED and sold as second-hand copies, over in Japan. Selling them for $40 is basically pulling a Walmart and keeping other potentials out of the market. That price works for games with less content like the majority of the ones on JAST’s catalog, but the amount of effort that goes into a good game that’s the length of Demonbane or longer requires far more work to pull off well, and the only way to support prices like that is either with a massive amount of sales or something else backing it up financially.
This is only mere speculation, but I imagine Demobane will have to sell a significant amount far greater than their previous games to make profit at that price of $40.
So if you’re a fan of VNs be sure to pick up a copy. I know I will be at the next convention I see it in.