Reporting back: I have my BambuLab X1C printer setup and have printed with it for about a week. It's fantastic: it's fast, and the prints come out perfectly every time. Truly an appliance: it works with only minor setup straight out of the box. I'd say it's a quantum leap better than my Prusa MK3S, which I guess I should try to sell while it still has value.
@NeverDie Yeah, but when I priced out domestic places, they all wanted enough that the client just decided to go a different way. This was only going to be for a prototype, but even so, I got prices ranging from I think $10-50 per pin holder, and it was less than 2 grams of plastic each. I just checked again, and JLCPCB would do them for $1 each, and then $20 for quick shipping, and as low as $4 for the slow boat that takes a month. None of those options were very appealing at the time.
Digikey wants $13.66 each for this when I pick qty 10, so still not worth it for this project. Shipping with them is free, but I have no idea how quick they would be.
I also checked PCBWay, just for fun, and they quoted 1.24 at qty 10, for $12.45 total. Interestingly, the quote for 1 was $12.45 also. They wouldn't show an estimate for shipping without clicking the 'Submit' button and having a human engineer review the file for printability. Since I'm not actually going to do this now, I don't want to waste their time, so I don't have a total price from them for comparison.
As far as OP, this is a very old thread from 3.5 years ago, so I doubt that they still need help.