How are Leica lenses made?

Ever wondered how Leica lenses are made, and what makes them so special? Leica just released a video of their manufacturing process, detailing the intricate method of producing some of the world’s best optical instruments.

But it makes me wonder, considering how well the video was made: was it shot with a Canon 5D Mark II? ;)

Knowing that their process involves a lot of skilled human hands (and eyes), how much would Leica lenses cost if they used cheap labor from China or third–world countries like the Philippines?