Contrast between parents' attitude and yours

Sometimes, parents and their children may have some different ideas and attitudes toward something, like money, studies or time management. My parents and I usually argue about prices at food or clothes, for I think the price is resonable while they think the price is too expensive. Have you ever met this kind of situation that your parents have different attitudes toward something? And what's the difference or big contrast between your parent's attitude and yours?

I will be glad if you can share your experience and opinion with me.