The Cushion is the lowest priced item on this Seat Tail Box (gsx-r600xk5) schematic.
Some items from this specific schematic: Box Assy,seat Tail(blue), Cushion, Tape Set,box Seat Tail.
The Seat Tail Box (gsx-r600xk5) assembly is constructed from several parts from which the Box Assy,seat Tail(blue) is the most expensive.