Of all the components used in this assembly the Seat Assy(blac is the most expensive.
This schematic depicts all components used in the Vl800 Boulevard C50 2005 (k5) California (e33) Seat (vl800k1/k2/k3/k4/k5) partslist.
The component with the lowest price in the SEAT (VL800K1/K2/K3/K4/K5) schematic is the Cushion(11.5x22x20).