Thanks, duynguyenle, it does help, and I genuinely know you mean well
But the devil is in the details, as you see most of these are bulk-sale items, digikey seems to have a $75 min-shipping cost, to top them off, sometimes customs hold these items, and you get to explain why you bought 200 screws etc. They laugh when you explain they don't sell less then 200 and you bought 200 for 2 of the item etc. (If I could get everything from Digikey, the $75 cost could be gulpable) - also, chellenges of living in Turkey, I can't order multiple international items at once, I can only safely order one thing at a time, and it takes 3-4 weeks for them to reach me (again, customs people hate regular people)
Anyway, my ultimate solution to all these problems is Shipito, buy them from US, batch them, re-declare them to be customs-friendly, send them to yourself in a batch - so now, practically, I can shop like I'm in the US, it's wonderous when buying small things like these
But still, even with all these experiences, it's unclear which parts are ideal for usage on keyboards
And again, this is my ultimate point, it would be nice to have a "vetted" list of parts, collected by our community