I believe he rebuilds them, and if so his price is a bargain (my invoice for my T/A's unit was for $199+$12 shipping). I just wish mine would show up, it's been over 14 months since I sent it in, and 2 months since I mailed him the payment.
I am not aware of anyone else who can rebuild these. I heard there is someone out east, NJ or someplace, who does a cosmetic restoration of the these only and it costs more than twice what Fred charges for a complete rebuild and restoration!