These are one of the most expensive and feature-rich motherboards out in the market. These motherboards however, house one of the most impressive processors from Intel Ivy Bridge Family line up, their price range are around $250.00~$400.00 dollars due to the performance and specifications it contains. 

The majority of these motherboards are for superior usage far more than just gaming, multi-tasking. etc.

If you really want something for 3D Modeling, State-of-the-art Overclocking capabilities, Transcoding Videos, clustering, High traffic servers, these motherboards are the option hands down. Otherwise, you could just be wasting a little bit more than what you really want.

Getting the best computer is not about the most expensive one, it's about the most useful and how much productivity you can make with it.

This is by far the most advanced engineering out on the market right now and I doubt that these prices will go down soon.