As in if it says silver tip, you actually get a silver tip knot. Seen some cheap sources online, but don't know about them.
Might as well get them out of a cheap Omega brush. Heck, I have one that cost me all of $5 earlier this year with a 24mm knot. You can’t hardly buy a knot alone for that price. I’ve seen people break and discard the handles and keep the knot for a nicer handle.I like the boar knots I’ve gotten from Shave Forge. But if anyone knows where I can get Omega boar knots, I want to hear!