Weiser would have been my first suggestion, and since this is not a book on Thelema (they seem to have exclusives with Bill Breeze and Lon DuQuette for that subject matter)if you can get properly presented it might be a go. Not sure how Kieren Berry set up the deal for his book on Greek Isopsephy...but it's one of the better works they have put out in the last 10 years.

If not, maybe Luxor Press? Gerald Del Campo referred me to them at one point after my disaster with Weiser.

Good Luck.!