It's been reported in these forums that the Unichrome Pro II chipset produces visibly better video playback quality than any NVidia solution. You also get much lower power consumption.
BTW, I think I also found the same 2.2" case: The Casetronic C158BITX Depot
has the 60W, 90W, and 120W versions for $92, $115+, and $120 respectively, with $10.85 S&H
They also have an assembled barebone system
, with 60W PS, VIA EPIA-EX15000G and 512MB DDR2 for $351.00 + $14.29 S&H = $365.29.
That brings the Fiire markup down to $172.97
They also have a barebone system available in the 2699R case
for $338.00 + $15.24 S&H = $353.24