In the article there are bad examples like the small pieces of space junk that orbit. Space junk that small doesn't send radio signals to earth! As for the ~70% left for guidance etc after the launcher and propellant has been deducted is just silly. Please give me the numbers that shows how you are going to build the rocket and fill it with propellant for $600. Even $2000 for that matter. Anyone can sound clever by quoting terms but putting the numbers out there is another matter.