When we pay the price for something which has no value, it is effectively a forced or even wasteful act, and definitely does not constitute the kind of sacrifice mentioned by the women at the airport. Who hasn't heard the verdict that boycotting at school is just a waste of time and will simply let down your parents? But if they believe they are fighting for something valuable, then they are not sacrificing anything, but rather it is a means to strive for what they want.