Concerning the price and concentration: there are a few owners who have millions and the rest who can mine hundreds PRT per day.
Until the ownership spreads, I would not count on massive increase in price. Personally I would not invest much money in a coin with low trading volume and a risk of early adopters dumping all they have.

I am going to start selling at 500 and keep only 50% of what I have. For the good of the coin, so my remaining 50% is worth more:)