Saying people get charged $40 for (allegedly) AI art is unfair
There's way more than "le good CGs" in this game
I would even go as far as saying that the art is secondary in this game because imo the mechanics and gameplay sets it above the countless games that have good art(and still arent listed between the best h-games)
You can play karryn's prison as a normal game without experiencing any of the smut it offers and still have fun
So yeah i disagree with what you said
The mechanic and gameplay for the game is real simple and bareboned, in comparsion with many other average game also made with RPG maker, or similar in the market, with a fraction of the $40 price. A cherry on top is they dont have that "mechanics" artifically stretching the amount of contents, in this case for karryn's prison, CG arts, that can be counted by fingers, into 500 hours of gameplay.
You enjoy and have fun with the game, doesnt mean it should cost more for what is actually is.
Just like packed noodle, everyone all times favorite, arguably tastes better than more costly and properly mades ramen, however that doesnt mean it should cost $40 just because it's just as good.
As disappointing as remtairy is, if you ignore the captive market and the bars arent that high, they are among the better porn game devs out there. No this is not the good news.