The component with the lowest price in the FRONT WHEEL schematic is the Plug (10v).
Parts such as the Front Wheel: Spacer(1et), Collar (1w1), Axle, Wheel, Bearing are included in the Dt125re 2006 1d04 Finland 1e1d0-300e1 Front Wheel parts fiche.
The Front Wheel is made up of components including this Rim (1.60-21) which is the most expensive.