The lowest price component in this Transmission parts-list fiche is the Circlip,17mm.
This schematic depicts all components used in the Gz250 Marauder 2003 (k3) Usa (e03) Transmission partslist.
Some items from this specific schematic: Bearing(22x56x16), Bearing(17x36x12), Spacer, Shim(17x24x1).