How much Dollars for Sex ?

A man meets a woman at a bar and asks her
Would you have sex with me for 10 million dollars?
Without skipping a beat she screams
Yes!
The man then asks
What about for $20?
She looks at him sideways and says
What do you think I am, a whore?
The man says
 

We've already established that you are, now we're just negotiating.