For your last question Joseph Walla wrote a great story on our development process: https://news.ycombinator.com/item?id=7038287 https://news.ycombinator.com/i

For your last question Joseph Walla wrote a great story on our development process: https://news.ycombinator.com/item?id=7038287 https://news.ycombinator.com/item?id=7038287 As for electronics, the simple answer is most consumer devices have a well-established price on other markets, making it easy to guarantee prices without significant risk.