I think you guys are probably about $100 low; my "hopes" would be for CG prices in the $412 range, although my guesses have been low too of late -- those MOAB and Lardoganzaaa prices took me completely by surprise. I haven't been able to pin down any sort of consistent thickness/width/length/handle type pricing structure. My best comparison is that the Bushmaster Mistress blade is very much like my Arctic White SHBM, which was $650. However, that was also a custom shop blade; I'd expect a production version to be priced significantly less.
I wouldn't be surprised if they made an appearance at Knob Creek on Friday morning.