I had to re-read the post because I thought I was reading something out of 2001.
DDR RAM is horrendously expensive round these parts and the only time I've seen PCI video cards in the last five years has been on EBay.
Good luck to Troika, but spending good $$$ on something based around ten-year old technology (and its not a "real" Amiga!) is foolhardy.
They'd be better off picking some tech which is expensive today and working on making that function properly so that in two years+ time when they finally have a prototype then the rest of us could afford the hardware..