The $75 fee is pretty much standard in the industry. I've had to have a Primare SP 31 rebuilt, even a new video board, which had to be sourced from Sweden. My Esoteric DV 60 had to have a new transport, it was readily available.
Although we may be talking apples and oranges here, there seems to be parts available for many discontinued, or older models in some lines. I recommend you contact the manufacturer, if anyone can provide the parts, they would be the first to be contacted IMHO.
Good luck I hope it works out for you.
Regards,
Dan