AnandTech takes a look at how much it costs to build an average Intel P55 based motherboard, you can check it out over here.
My first 430VX motherboard that eventually spawned into AnandTech set me (actually my parents, I was 14) back around $130. Prices haven’t really changed, yet the expectations from end users have gone up. Granted there’s this new ultra high end market that didn’t really exist back then, but the majority of motherboards sold have far more features and don’t cost much more than what they used to.
The pressure is on the motherboard makers to deliver affordable P55 solutions. Without affordable motherboards, Lynnfield will fail - so Intel and end users are both expecting a healthy supply of ~$100 motherboards. As I’m about to show you, doing so is quite difficult..