Wheather he makes it commercial or not will be Woltaire's decision. But given all the commercial games around AGS that exist now I am sure that someone would buy this. This author is already among the top 10 of AGS game developers given the AGS game award list as a ranking. So he surely will reach his audience whatever he does... But I also don't see why a demo would point to a commercial release. There never was a production thread about this game at the AGS forums. So I doubt that it will be released in November after all.

Why assume that the game will cost money? Just because there's a demo doesn't mean it's going commercial. The game releases in November so the demo might just be to peak our interests in the interim.

I think that AGS is one of the best engines, I don't get this comment about it not being advance enough? Beside of that I think that Le Woltaire deserve to get something from his work! He already gave us 2 of the best AGS games ever to play for FREE isn't that enough?
I support your idea about selling the game! And I think that piracy is not the thing to worry about when adventure game genre is in question, ESPECIALLY AGS games. People here realy love adventure games, somebody will for sure buy it :)

Good ideea to sell the game (not that anyone would buy it knowing what the pirate teams are capable of), but that thing with the "really fast machine" intrigues me. I'll try and see if it works on mine and then I'll probably comment it more. Anyway, in my opinion all AGS games should be free. Those who want to sell should find a more advanced game engine. Anyway, you decide if you make free or commercial games.