Ikea is set to sell their pre-fab house, the BoKlok, in the UK in 2007. Currently they sell about 800 per year in Sweden.
They claim affordability as a selling point, but for the the size I don’t think it’s that great of a deal. Prices range from 150,000 to 222,000 Euros for between 495-872 square feet.
For now, Ikea isn’t planning to introduce the BoKlok houses into the US or Germany.