I think it'll eventually stabilize at some value between $100 and $150 and stay there for a while. I wouldn't be surprised if there was another bubble up to $250 or greater. I would be surprised if it went below $100.
I still do not see any basis for such high prices. My estimate is around $20 with single digits not entirely unthinkable.
Some people tend to believe that wealth preserving bitcoin owners will keep the price higher, but what would they do if they see that their wealth is not preserved? If they experience a long decline, I think a large fraction of them will sensibly sell, if only to buy back later for a lower price. They will effectively become speculators.
The base line for the bitcoin price is established by those bitcoin users who actually pay for goods and services, but that is mostly Silk Road, Satoshi Dice, and a few other businesses where bitcoin payments do not actually have much advantage.
My prediction is that we will have a decline that lasts 6 months, a year, or longer, with interspersed bull traps like the first one yesterday. My estimate for the low point is $20. $30, while conceivable, would actually surprise me a bit, $10 would not. Of course, unpredictable things may happen in the future that throw these estimates off, but then we would all see them and adjust accordingly.