The mechanical pedal powered machines in the book can be built for $ 10 to $ 50 (the washing machine being more expensive at $ 100), everything included. (lowtechmagazine.com)
Even if you make your own pedal power generator, the costs add up. (lowtechmagazine.com)
Today, the interest in pedal powered machines is almost exclusively aimed at generating electricity, for instance for charging cell phones and laptops - products that did not even exist in the 1970s. (lowtechmagazine.com)