Putting the Docks into print will cost £200. That covers the cover artwork rights, ISBN, layout, formatting, proof copies, revisions and then a base twenty copies to get the distribution chain moving. This would be POD, producing a 96 page mass-market paperback. It also gives it a shelf price of £4.99, even after distribution, P&P, author royalty and production, which createspace and lulu can't match.
The problem is that right now, I don't have that spare. I can either publish two new ebooks, or put The Docks into print. The print audience is larger, and reaches people that don't own e-readers. It gives me access to bookshops, and to a wider set of reviewers. On the other hand, the best way to promote a book online is to release another book. It's not just the sales of the new books themselves, it's the sales of the existing books that follow on.
Right now, I am going back to writing. I've got several pages of notes to flesh out, and a novella or two to finish.