Due to the frequency range and research nature of my work, the stuff I do is on specialized technologies for prototyping. I use tiny pitches, laser vias, ENIPIG finishes, and expensive fancy substrates.
When I make non-high-frequency PCBs they are usually on your standard cheap-process, often with something like 150um minimum track-width and spacing.
But I was wondering what you get in high-volume industry. Seeing how the industry is commonly using 01005 and pushing towards 0201m components in things like laptops, tablets and mobile phones, which have pads on the order of 100um: What kind of pitches and clearance and track width are standard there? What is the cost of such a PCB in ultra-high-volume?