For car parts, where are you getting your prices? Here in the US, there's usually online sellers of OEM parts that sell for much less than dealerships. Of cou

For car parts, where are you getting your prices? Here in the US, there's usually online sellers of OEM parts that sell for much less than dealerships. Of course, even these can be pretty high, depending on the part in question. A lot of the parts you listed are things that should not ever be replaced, unless you have a wreck. If that happens, then part cost shouldn't be your concern, because insurance is covering it (hopefully, the other party's insurance). And finally, the used parts market is alive and well. Any of those parts can be easily found on Ebay for a fraction of the new OEM price. And on top of that, many of those parts have Chinese-made aftermarket replacements, which cost much less, and may be acceptable quality. As for the "smart" rearview mirror (I think you're talking about auto-dimming mirrors here), my Mazda came with one from the factory, but buying it afterwards costs about $300, certainly not 1k. Generally speaking, if the car is fairly new, you shouldn't be replacing parts like that except through insurance. If the car is old and you're trying to restore it, you should be looking for used parts. And if you have a new car and you're trying to add all the nice options to make it like the top-end trim model, then you're doing it wrong: you need to get the car from the factory with the options you want instead of trying to add them later, because that never makes any economic sense.