Cars have also been dropping in price.

And knives apparently.

I recently encountered this randomly -- knives are apparently one of the few products that nearly every household has needed since antiquity, and they have changed fairly little since the bronze age, so they are used by economists as a benchmark that can span centuries.

Source: it was an aside in a random economics conversation with charGPT (grain of salt?).

There is no practical upshot here, but I thought it was cool.

Evidence for this claim?