You guys missed the point, sure the procs are gonna cost 400 at entry level, but the mobo's not having to include the NB will be reduced in price.
Plus DDR3 will come down in price as well.

Also, all these prices are release prices. They are bound to fall after a few months and I'm sure most of us could hold on to our C2D setups for a bit longer. I mean how many of you were really considering upgrading the day of release? Plus you have to factor in any last minute issues that will arise, which are bound too, and the initial performance gains.