The component with the lowest price in the SWINGARM schematic is the Washer,8.5x16x1.2.
The Swingarm is made up of components including this Arm-comp-swing,black which is the most expensive.
Parts such as the Swingarm: Nut,flanged,8mm, Nut,14mm, Cap,chain Adjuster,bl, Boot are included in the Ex500e1 Gpz500s 1994 Europe Fr Nl Fg Gr It Nr Sp Swingarm parts fiche.