The QIII can be taken apart easily. I did mine last week after boiling the light in a zip lock bag to loosen the glue on the head threads.
The electronics then screw out quite easily.
The switch assembly also comes apart easily.
Thris leaves you with all of the metal parts needed for the anodising process.
Having said all of this, no I would not pay to have this done. I would sooner pay for a better binned Luxeon.
Streak