Male or Femal Brain ?

 A young girl had been suffering from severe headaches and had tests run by her doctor. The doctor said, "I'm sorry miss, but you have a massive brain tumor."

The girl started crying and said to her mom, "I'm only 15 years old. I don't want to die."

The doctor said, "Well this is modern medicine. There is an experimental technique for a brain transplant, but it's expensive and not covered by insurance."

The girl's mother said, "Don't worry, dear. How much does it cost?"

The doctor replied, "Well, a male brain is $1,000,000 and the female brain is $25,000."

The mom said, "No problem. But why is the male brain more expensive then the female brain?" The doctor replied, "Because the female brain is USED!"