I hide from the headlamps, no lights in the window

Gotta love Fiat… took the barc in yesterday to have its headlights adjusted (amongst other things), and apparently it may still fail its NCT retest because there are fingerprints (not mine) on the inside of the glass that are causing the beam not to focus properly.

Just buy a new glass then? Ah no, Fiat will only sell you a sealed headlamp unit, for 300 euro…