A husband walks into his bedroom to find his wife packing her suitcase, he asks her "Where are you going?"

She replies, saying "I'm going to London, I hear prostitutes get paid £400 for doing what I do to you, for free"

Later, the wife walks into the bedroom to find her husband packing his suitcase

She asks him, "Where are you going?"

He replies, "I'm coming with you, I want to see how you're going to live on £800 a year"