When an old fashioned rotary switch / push button switch fails it might be £10 to £50 for a new one.
When the touch screen on a modern car fails ....................the touchscreen on a newish car goes on the blink you cannot just buy a 3rd party screen unit - it will be available only from the manufacturer!
When the radio/satnav on an older car goes the manufacturer replacement is megabucks. Replace with a new Sony etc is much less.
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