Meta Quest 2 VR controller repair in Melbourne?

Trying to get the controllers for my son's Meta Quest 2 repaired. I would have thought there would be a whole cottage industry for this given how often they fail but the only place I can find is GC Repairs up in QLD.

The Meta site seems seriously broken (spins indefinitely when adding items or buttons totally missing) but new controllers seem to be $140 each or something? A bit rich for a set that cost $400 new.

Help appreciated.