No one is putting a gun to anyone's head here. If you think its not enough for the money, then don't buy it. Last time I checked we had a free market economy. I'm personally not a fan of the $1, 2, ...5k headphone trend...but that's life in high end audio.
That said, the LCD-3s come in at $2k and are the best headphones I've heard to date and I'm thoroughly enjoying them...more so than any of my other headphones. So everyone's mileage may vary at these levels. I think Sennheiser needed a $1k headphone to compete with the LCD-2s and a few others in the $1k market (a previous hole they had in their line up). Whether the HD700s fit the bill, time (and your ears) will tell.
That said, the LCD-3s come in at $2k and are the best headphones I've heard to date and I'm thoroughly enjoying them...more so than any of my other headphones. So everyone's mileage may vary at these levels. I think Sennheiser needed a $1k headphone to compete with the LCD-2s and a few others in the $1k market (a previous hole they had in their line up). Whether the HD700s fit the bill, time (and your ears) will tell.