The boss owes me about $10 000, and is going to pay me in the coming months. I can live without this money for now, but I'm wondering if it is worth spending $5000 or $8000 with a subsidy publisher to get my book out to a wider audience?
Despite my main purpose is not to make money, I'm interested how much could I expect to make in return if I'll submit to a subsidy publisher?
My purpose with regards to my book is to spread knowledge, not to earn money (of which I already have enough).
At the moment, my book is available for free as a download on my Web site. I'm not sure if that's a good way to spread knowledge to a wider audience.
I've already tried to submit my book to many literary agents, but have not received a positive response.
Should I go to vanity publishing as a last resort?