It just occurred to me that @$456, assuming miners are on average selling all their coins, the market has to absorb $1.6 million in sales just to stay at the same price. You gotta wonder how long bulls can keep that up, considering we're going to run out of room in blocks in the next couple of months at this rate.
The market can be irrational way longer than your shorts can. That on top that the market does not seem to be overheated at the moment.