Having the same problem. I'm working on the Aurora delta, and the quotes I'm getting for these parts are in the $200 - $400 range, EACH. Am I wrong to feel that's on the high side?
I'll check out Staton. Alternatively, anyone know of a good machine shop that will make these for less, and / or have a surplus supply?
I'm in the Ottawa / Montreal area, in Canada. Looking for the freehub and brake disc adaptors. Probably hub flanges, too.