Some items from this specific schematic: Cap,roof Seal, Screw,pan,4x12, Screw Grommet 4mm, Seal Brkt,fr Spkr.
The component with the lowest price in the SPEAKER SEAL BRACKET schematic is the Screw,tapping,4x12.
The sub assemblies and components that make up this Speaker Seal Bracket include this Seal Brkt,fr Spkr, the most expensive part.