This is anecdotal but I have yet to find a PCB manufacturer in the US that can do it cheaper than Chinese fabs at anything less than ridiculous scale - high speed digital/RF included. I still use US manufacturers half the time because of IP, timeline, or quality concerns (its just easier to get on the phone with someone who can help) but I don't see how the other manufacturers could be within 5% of China's cost when circuit boards at anywhere from 2x to 10x more expensive here.