The most reasonably priced component used on the Trx500fe 2010 (a) European Direct Sales / Ec Front Brake Caliper is the Bolt,flange,8x49.
Some items from this specific schematic: Screw, Bleeder, Bolt,flange,8x49, Piston,34, Caliper Sub Assy,.
Of all the components used in this assembly the Caliper Sub Assy, is the most expensive.