Answer:
because they need to be responsble to do thing and not being silly
His own drawings contradicted everything he felt about the things found in the chest. When all of the things he found in the chest disgusted him and proved to be worthless to him, his drawings had elicited feelings he had from his childhood. He soon realizes how important those things in the chest were especially that a part of his childhood was found there.
Tom Robinson he was a black man that was accused of raping Caucasian woman, and an idealistic lawyer offers to defend him. Which makes nobody believe in the innocence of a negro.
Basically to charge something at a price that people wouldn't pay in their right mind. (Excessive charge).