I know about the demand and supply and its the reason a marlet gets different price at different price but what make bitcoin users to lead to this pricefall..I mean once there was 1btc = 500$ and after that I herd some hackers have hacked some exchanges and many scammers also poped out during those days..and this all leads to currenct price of 230$ I hope some peoples will do something to avaood these problems as much as we can