Today's prices can be even higher. In the above link, if you choose the Skulltrail motherboard and processor (QX9775, D5400XS) and upgrade to 8GB of memory, add dual 9800 GX2s and upgrade to the appropriate PSU (SilverStone 1200), it becomes: $10,223.00
I just checked out their current listings. Their prices do seem too high. I can do better than that here in NZ even though the NZD is worth about .80USD and it has to come all the way down to the southern end of the planet.