A Prostitutes going rate

A man gets home and finds his wife packing a suitcase. "Where are you going?" he asks.
"I'm moving to Las Vegas.” She replies, “I’ve heard that prostitutes there get paid
$400 for doing what I do with you for free!"
Later that night on her way out the wife walks into the bedroom and sees her husband
packing his suitcase. "Where are you going?" she asks.
"I'm going to Vegas as well. I want to see you live on $800 a year!"