There's some other ways you can get your novel into the hands of blind people as well, much of which revolves around digital copies. You could contact Bookshare and submit your work there. It's an online library service with hundreds of thousands of books available. Then we could read the book on a computer, phone, or braille display. Is the book available on Kindle, iBooks, etc?

You could try to contact Seedlings; they publish lots of books. Otherwise, American Printing House for the Blind (aph.org) is kind of the standard for publishing. It won't be cheap, but they do any size order.