You can also get a million units real fast just by trading high price items at the space stations. Just look for the high price starred items in the station and on each ship (those are the items that ship buys at a high price), then buy them from a ship that doesn't have them starred and sell them to a ship that does.
Do not follow where the path may lead. Go instead where there is no path and leave a trail. - Ralph Waldo Emerson