[avar]

> Usually the manufacturer has them

My experience with this has been terrible for e.g. circular saws & power drills, to name one example.

I had a part I needed for a Makita circular saw & Black & decker power drill. In both cases buying every replacement part would easily cost 10-20x of the retail price of a new saw or power drill, compared to maybe 1.5-2x in the case of a modern phone. The aftermarket for OEM car parts is similarly brutal for most manufacturers, but for some happy reason phones are the exception.

[sudosysgen]

That happy reason is Chinese knock-off factories, which can make anything from knock-off screens to main boards, sometimes recycling some chips. If you were to go to China, you would often be able to buy every replacement part for more or less the going price of the phone.