The component with the lowest price in the REPAIR KIT 2 schematic is the Gasket (nas).
Some items from this specific schematic: Gasket, Exhaust Manifold (nas), Water Seal 1, Outer Plate, Cartridge, Gasket Kit (nas).
This schematic depicts all components used in the P150/175/200trx 1999 Repair Kit 2 partslist.