He asks, "What are you doing?"
She answers, "I'm moving to Sydney. I heard prostitutes there get paid £400 for doing what I do for you for free."
Later that night, on her way out, the wife walks into the bedroom and sees her husband packing his suitcase...
When she asks him where he's going, he replies, "I'm coming too I want to see how you live on £800 a year"