Hello Ever Elizalde,
The price high for it is Semi-Scripted, Field-tested & a complete set.
Ofcourse it will not suit everyone because as performers we all are different from each other.
The entire world doesn't speak english just the way Americans do. Different countries have a different kinds of people with different languages & accent.
The video was meant as a supplement to the pdf, hence it doesnot has the best editing but it conveys what it needs to.