It is a bit more expensive than your typical GTX 560 Ti graphics card. That's because it includes an additional RAMDAC signal processor. A single RAMDAC signal processor can only send two video signals to either DVI, VGA or HDMI. Therefore, a 2nd RAMDAC is necessary to send a signal to a 3rd and 4th DVI, VGA or HDMI connection.
This graphics card fits into a niche market for people looking to connect up to 4 HDMI monitors. since there is not as many people buying this type of card the price is higher to make up for the fact that not many of these types of cards are manufactured.