[StavrosK]

At quantity 1, though, most of the cost is from the person who has to package it. Qty 100 will give you a much more accurate price.

[TheSpiceIsLife]

You can buy 9.6 billion transistors for AU$599 (US$430) in the form of an AMD Threadripper 12 Core 1920X.

That's AU$0.000,000,062,395,833 (US$0.000,000,044,791,667) per transistor;