Some items from this specific schematic: Washer, Lock Washer, Bolt 8x40, Pipe, Exhaust.
The sub assemblies and components that make up this Muffler include this Pipe, Exhaust, the most expensive part.
The most reasonably priced component used on the Gsx250es 1983 (d) General Export (e01) Muffler is the Lock Washer.