No, actually I just want to compare the c-bill cost of custom designs as calculated by the book, to the c-bill costs of comparative cannon designs. I'm not interested in the availability modifiers at all, since those change by era, and I can make custom designs set in any era I want.
If it isn't listed anywhere, then eventually I'll go figure it out by hand. If I can avoid that I'd like to.
Fortunately I don't have to do that with BV. I hate calculating DropShip BVs.