For some cost-prohibitive items, many of us shop at the "boneyards".
This is especially beneficial when in the need of body trim, much of which is difficult to find in aftermarket sources. And the dealership will charge a premium for those parts, if they even still have it.
2009 ML350 (84K) - Family vehicle
2001 CLK430 Cabriolet (71K) - Wife's car
2005 BMW 645CI (124K) - My daily driver
2012 Mustang V6 (60K) - Daughter's car