It seems to me that alot of the pricing has to do with more features and build quality crammed into the latest motherboards.
last year the asus a8n-sli deluxe cost 225$ canadian when it first came out.
the Asus pw5-dh costs 299$ canadian. 300$ is indeed sticker shock. But 225$ last year was also sticker shock. Next year will be....400$ ?
But look what you get for that extra 74$ -- a remote control!

memory controller and some other bits.
Everything released for the high end..is naturally going to be expensive intially...regardless of conroe or not.
--It will be interesting to see if the nvidia chipset boards will be even more expensive than the intel ones.