Preliminary results suggest about 600 to 750 per book, about half is for the labor and half for the materials. Additionally there would be the cost of a graphic designer, which would be another 300-500. I'm still reaching out to people to get quotes, but I happen to know a great graphic designer that could probably do it for me for free, or for like 100.
"Books for All Time" told me they wouldn't be able to do it, but then one I posted earlier, Bessenberg Bindery, gave a positive response, and tentatively quoted me the numbers I wrote above.
I'm waiting for a response, but that 600-750 might actually drop 200 on each end due to "one-time" costs. Meaning, best case, the "cost" is about 500 per book, but I'll likely pay a few hundred more than that for some of the one-time things (dies, molds, graphic designer, etc.)
I wouldn't be able to front that kind of money any time soon, but if anyone else is interested, those are the numbers I've seen so far. Obviously, buying multiple copies at once would possibly allow for a discount. If anyone is ever interested, let me know, even if its 5 years from now.