I'm trying to find a better source, but this Boston Herald article claims they've put in a little over $1 billion. http://bostonherald.com/news/national/general

I'm trying to find a better source, but this Boston Herald article claims they've put in a little over $1 billion. http://bostonherald.com/news/national/general/view/20120522private_supply_ship_rockets_toward_space_station http://bostonherald.com/news/national/general/view/20120522p...