This kind of thinking has destroyed the animation industry in Japan, as well as the production and consulting industries. When a craftsman asks for a certain price for something he has crafted, why stand there and yell at him?
It may be true, of course, that the craftsman is asking too much. If that is your conclusion, you are under no obligation. Reasonable humility (and manners) suggest that you temper your conclusion with the knowledge that the price might not be excessive to other people. Perhaps you are mistaken yourself.
It seems very odd that we see so much expostulation over costs that are not very substantial.