Some items from this specific schematic: Bracket,seat, Cushion(11.5x22x20), Washer(6.5x20x1.6), Washer.
Of all the components used in this assembly the Seat Assy is the most expensive.
The most reasonably priced component used on the Vl1500 Intruder 2014 (l4) Usa (e03) Seat is the Washer(6.5x20x1.6).