Regarding the price, it's higher than I budgeted for (and the terrible American dollar doesn't help either), but it's fair.
Given that the 0.x and 1.x releases were all free, this is the first time the developers are seeing money from end-users. They absolutely deserve to see some income.
Besides, it's free to try - that's what'll attract new users. How many other non-Unix variant OSes allow that?