Answer:
When you buy me I am costly, but the only use I have is hanging only. What am I?
What is easy to get into, but hard to get out of?
I am perfect with a head perfect without a head; Perfect with a tail perfect without a tail; Perfect with either neither or both.
You throw away my outside, you cook my inside. Then you eat my outside and you throw away my inside. What am I?
I can fly but I have no wings. I can cry but I have no eyes. Wherever I go darkness follows me.
I am your mother's brother's only brother in law. Who am I?