Did expendable foci survive the edition change, if so, WHERE?

Thank you very much in advance.

<snip a not particularly helpful bit>

Actually, scratch all that. No, they didn't bring them across to the new edition, as far as I can tell.

Though they would be fairly easy to port over. Just price them somewhere between fetishes and "real" foci - a few thousand each (2-7k, maybe), rather than tens of thousands or mere hundreds.