I am never in favor of silk knots for cuff links ....
let alone wearing them as studs. The reason is they look too much like giveaways, Like the ersatz pocket squares stapled to a piece of card board which they use to stuff in your jacket when you had it drycleaned.
I agree that the silk knots look like giveaways, which is why I'm a bit surprised to see a retail of $65. I believe I have a full set in gray, although not pure silk I'm sure, that did come with my formal shirt.
If you like the look, then by all means, I would just question paying that much for it, I'm sure you can do better elsewhere.