The lowest price component in this E-1 parts-list fiche is the Nut,hex.,cap 6mm.
Some items from this specific schematic: Nut,hex.,6mm, Gasket Cyln Head (nas), Spark Plug(u16fsr, Cov,l,head Side.
This schematic depicts all components used in the Crf50f 2008 (8) Japan Ae03-180 (jdm) E-1 partslist.