The component with the lowest price in the SEAT (MODEL S/T) schematic is the Washer.
The sub assemblies and components that make up this Seat (model S/t) include this Seat Set, the most expensive part.
A sample from the products for the Seat (model S/t) include: Screw, Cushion,lwr, Cushion, Cushion,seat Lock(10x22x6).