I found this while surfing the web:
Repeating a prediction that has been made incorrectly only a million times before, the United Nations said today that the market for domestic robots will take off in the next few years.
The market for robots that can vacuum, scrub the floor, empty dishwashers and so on will grow to be worth a world-wide total of $3.3 billion by 2002 -- with some 24,000 units sold. (Do the maths: that's an affordable $137,500 each).