To be honest of course there always feared when we are going to invest into something there are chances that we can't get the exact amount of their investment since we feared for it make sure that we can afford to lose that money if you don't have that strength then don't hesitate to risk your money for nothing. Since the price is really unpredictable you might manage to earn profit or to lose your money. You must face that challenge and fear to overcome your own weakness and surpass the strength of earning big moneys.