The component with the lowest price in the METER schematic is the Screw,tapping (eu0).
Parts such as the Meter: Water Temperature Assy, Collar, Damper, Damper are included in the Tz125 1998 4jt5 Holland 284jt-100e1b Meter parts fiche.
Of all the components used in this assembly the Water Temperature Assy is the most expensive.