I have a full set (4) of chrome and a full set of black, also matching side/B-board clips in chrome/black.
I could be convinced to part with them for money, the problem is how much would someone really pay for these?
I wouldn't trust this part to be 3D printed, it will likely crack.
Actually after looking at it, I don't think it will crack... The designer made them thicker than the originals.
Of course that makes the PCB kinda "float" above the surface you are mounting too, not sit flush/flat like the originals did/do.