Interesting divergence..
So people believe that bitcoin will be a better method of exchange at a higher price..
Yes, exactly. Though I don't think 30+ is reasonable right now, it looks like some people are either extremely bullish or didn't factor in failure probability.
A functioning medium of exchange needs strong forces to balance swings on either side, preferably of a size up to USD 10M. A price of 2 USD is kind of low for that, since we only have less than 8M coins so far and one should expect half of them inaccessible due to hoarding, and a new market like this one is not perfectly liquid yet.
I voted 5-10. I know that sounds very very bullish, but hey, it's the speculation board. This is just based on the possibility that some small market starts using Bitcoin, which is not all that unlikely and might justify double-digits, so multiplying probability with outcome, I end up somewhere in between.