I think almost everybody already knew this. Its hard to earn cause you also have to think of a lot of things. What will you sell, competition, market price, how much will you sell it, demand, where will you sell, how will you sell it and etc. If making a million is just as easy as knowing this, then I guess a lot will be a millionaire by now. Almost all of us already knew this, we are now all competing with each other that make it even harder to earn a million.