Is chassis manufacturing more difficult than it seems

Yes, I remember watching a video explaining how the bend on the side of an Audi differs between cheaper and more expensive models due to ease of manufacturing. That makes intuitive sense too: a nicely carved stick is more valuable and takes more time to make than one that’s simply had the bark removed. The body design of a Lamborghini is orders of magnitude more elaborate than that of a VW Golf so ofcourse it’s going to also cost much more.