> From fab perspective, they used the same and it becomes CHEAPER not more expensive to make it.
They may have used the same five nanometer process, but that doesn't mean Apple's own costs went down. I don't know what their negotiations look like, but TSMC have stated that they'd be raising prices on already-established chip technology. In general, given supply issues for many of the components that go into making a laptop over the past few years, it would be a miracle for Apple's costs not to have risen.
Combine that with general increases in the price level, and 20% is probably not that far off.
