Why are men brains more expensive?

In the hospital, the relatives gathered in the waiting room, where their
family member lay gravely ill.

Finally, the doctor came in looking tired and somber. "I'm afraid I'm the
bearer of bad news" he said as he surveyed the worried faces. "The only
hope left for your loved one at
this time is a brain transplant. It's an experimental procedure,
semi-risky, and you'll have to pay for the brain yourselves."

The family members sat silent as they absorbed the news.

At length, someone asked, "Well, how much does a brain cost?"

The doctor quickly responded, "A female brain goes for $2,000. A male
brain costs $5,000."

The moment turned awkward.

Men in the room tried not to smile, avoiding eye contact with the women,
but some actually smirked.

A girl, unable to control her curiosity, blurted out the question everyone
wanted to ask, "Why does the male brain cost so much more?"

The doctor smiled at her childish innocence and then said to the entire
group, "It's a standard pricing procedure. We mark the female brains down
because they're used."