I'm not sure what those cost(EAW, etc.), there are lots of things that go into the cost of a pa speaker.
You have the components which vary in quality and cost and sound.
You have crossovers, which vary in complexity, the more complex the more expensive the crossover will be.
Bi-Amp/Passive switchablity is a cost factor, even if it is minimal.
Box features such as fly points, handels, etc will add to the cost of a speaker.
Box materials, MDF is cheap, birch plywood is more costly.
Customer support, if I'm paying a grand per box I expect some sort of tech support and a warrenty.
Carvin claims to cut the middleman by selling factory direct, wether or not this is true is to be determinded by the individual (I've never compared a Carvin box to something else, so I don't know if the cut quality corners or actaully cut the middleman). So, there's the cost of the various product distribution networks.
You also have manufacturing methods which will influence the end cost.
Don't forget profit margin and brand recognition cost(if any).
Once you start comparing speakers keep this in mind. Features are part of the price. If you want more features, the price goes up.
The large concert PA company will need features you probably don't care about and have probably not even considered, that is why their speakers will cost a lot more, but at the same time, they are probably going to get better components with those other features.
These variences in cost can be found in many itmes, not just PA speakers, but also mixers, crossovers, speaker controller boxes. etc.
I hope you and others here find this helpful.
breese