Not really, both car body panels are not difficult to replace. The job is simple, as most body panels have been made with composite material or stronger plastics that can be easily removed by a trained technician. If you have the expertise, you can do so yourself. Both body panels can be removed and cleaned and even repaired. You can order the interior panels from wholesale websites, or you can get them repaired at the local garage. The price will also vary according to the car that you have. Check online for more information.
For more info, see How to Repair Auto Body Panels