The bitcoin price isn't really dropping, it has been fairly stable in the last 2 months.
It dropped from over $1000, but I consider it as a correction of the previous unhealthy rally.
Of course it's dropping. It took a big hit recently and look at the price compared to this time last year. I think it's lost nearly 2/3 of its value since then.
It dropped from the ATH because a high price between 700$ and 1100$ was not sustainable. 320$ is still high compared to the average price of 2013