Car makers keep adding more and more gizmos to their cars, and when they break the car makers charge insane amounts to "repair" them - usually because they don't actually repair the fault, but instead simply replace the whole part.
The boot / trunk on my non-Subaru car has a broken sensor switch, which causes the "door open" light on the dashboard and the interior lights come (e.g. when going over a bump in the road) on even though the boot / trunk is actually closed and can't be opened. It can also cause the alarm to go off when the car is parked. The car maker wants to charge me about NZ$500 to replace the boot / trunk lock ... that's the whole lock, not just the faulty sensor switch! That switch by itself is probably a $2 part, but is no doubt custom designed and can't be bought separately. :-(
It's not just cars either - trying getting a computer mouse repaired. Unless you're a whizz with electronic soldering, you're forced to buy a whole new mouse rather than a simple 50c switch to repair the faulty button. Rather than replacing the faulty door switch on a clothes washing machine, you have to buy a whole new door.