Eh... My parent back in the day paid over 10k for their plasma TV... Expensive it is, but not too far outside the realm of early adopter price.
What I think is the thing needs to find its niche before it really catches on though.
At its current price level, the niche is business; executives using it for boardroom meetings. I imagine it could also see use in the military, for planning strategy and running wargames (the kind that simulate actual modern war).