Ouch, that's not cheap! I think if it were my car I'd just leave it off haha--never listen to [terrestrial/OTA] radio anyway. Would have to do something to fill/cap the hole or whatever but I'd def. do that before buying a new antenna module.I broke mine too. I ended up buying and replacing the whole thing. I think that's impossible to glue this together and retain functionality.
Etka: 8J7035501- Roadster Antenna Aerial: