Just to amplify this, common parts across several models and somehow be more expensive for the "luxury" version. Rear hatch gasket for an '96 Oldsmobile Silhoue

Just to amplify this, common parts across several models and somehow be more expensive for the "luxury" version. Rear hatch gasket for an '96 Oldsmobile Silhouette mini-van was twice what the exact same part for the Chevy Lumina. Only difference in the two vans is a few more gadgets and more acoustic insulation in the Oldsmobile.