I'm considering making the switch to rigid fork myself, but this is a much cheaper option:
CarbonCycles.CC :: Components :: Products :: MTB Carbon UD with 1.1/8 inch Steerer :: eXotic UD Carbon Rigid MTB Fork - Disc Only Post Mount :: CC-F0M25
I haven't seen one in person yet, but they get some pretty good reviews online. $175 is a much better option IMO>