Pricing breakdowns are going to be hard to come by, as they're negotiated and confidential. But I think it would be safe to say that leading-edge core dies are going to be a sizable plurality (if not majority) of the cost. Only memory would come close (and some of those Reddit comments suggest more, due to it being HBM), as power delivery and other small components like resistors just aren't that expensive.

The trickier bit to measure is R&D, as it's both a fixed cost and one that can be spread across several products.