If the price breaks below 400 (that's not for sure, but quite possible) it may stay there for some time. But chances are good, that it'll be pumped up again (big media attention, max keiser going crazy about bitcoins etc.). Nobody knows when the bottom is in and it may be a good idea, to cost average into bitcoins, when prices are low (now they are not low imho). And be warned, it's a big gamble, so don't bet your house