An entire new class is not some map pack. How can some of you say that 15 dollars is to much?
It's a new freaking class. If you're invested in the game, that is a lot of gameplay that is potentially interesting to you. On the other hand, its not locked behind new areas or story which forces you to pay for a class you're not interested in.
IMO a new class could easily be 20-30 dollars given the amount of hours that went into RnD and prepreduction, design, animtion, effects, ui, testing and qa. A staggering amount of people are usually involved to bring a new class to lie, and it takes the work of nearly every department from sound engineering to networking to programming to get a new class to work. You're talking about many thousands of collaborative work.
This is not like some minor thing that a bunch of map designers or modellers conjured up in a few weeks. A new class is a big deal. 15 dollars is a very competitive price.
Now, I've not tried the class, so I cannot speak to its quality in specific, but generally speaking you get a new class in a 40-60 dollars expansion and that is seen as a major feature. So it's hard for me to see how 15 is too much.