I don't really get the whole "AI failed because it was $60" mindset. Its 25 hours long, is fully voiced, has multiple endings, and has more value than most 60 games that released last year. Even by the (faulty) logic that no VN should ever be full price, it has actual gameplay?
I haven't played that game in question, but just to offer another perspective my games (VN/RPG) are usually 45-50h long (if you play all content) and I sell them for $25. But maybe I'm the one pricing them too cheaply! I'm going to check AI now since I'm curious