The Bolt,hex 6x25 is the lowest priced item on this E-8 schematic.
A sample from the products for the E-8 include: Outer Comp,clutch, Piece,lifterjoint, Disk, Friction (mca), Bolt,hex 6x25.
The E-8 is made up of components including this Outer Comp,clutch which is the most expensive.