The component with the lowest price in the E-21 TRANSMISSION schematic is the Screw, Flat, 6x20.
The Gl1000k3 E-21 Transmission consists of thirty pieces with the Sproket, Primary being the most expensive.
Parts such as the E-21 Transmission: Ring B,set, Pass, Main Shaft, C.topgear 31t, M.tor Gearcomp are included in the Gl1000k3 E-21 Transmission parts fiche.