$15 is a pretty good guess for per-unit cost of mass-produced RPi0, I reckon.
Look at the price of "WH" version with superficial changes that cost pennies to add (wifi chip and 0.1" header), and (used to be) easily obtainable with no limit on the order size. Or, at least that was the status quo before the the great chip shortage of 2021.
Look at the price of "WH" version with superficial changes that cost pennies to add (wifi chip and 0.1" header), and (used to be) easily obtainable with no limit on the order size. Or, at least that was the status quo before the the great chip shortage of 2021.