I don't get what's evil about it. If you want the expensive headphones and can afford them, get them. If you think they are too expensive, get other ones.

Edit: want I wanted to say is, that prices are arbitrary. They are a number on a label. As a customer you pick what suits you best. If you think Sennheiser or Apple is overpriced, buy something else. It is their decision to set a price, as it is your decision what to buy. You are also not an "evil" customer, if you don't buy their headphones.