The Grommet-plug is made up of components including this Grom, Drain Hole which is the most expensive.
Some items from this specific schematic: Grom, Drain Hole, Grom, Washer Hose., Seal,center Pilla, Cap,floor Hole.
Of all the components that make up this Grommet-plug the Blind Plug 7 has the lowest price.