What exactly do you do Ms. Rosehips?
Well, since you asked… I publish your edited book to paperback or to eBook form. I put it on Amazon, or Barnes&Noble, or other markets. I ask one price for each market we publish your work to. I market you, and like every publisher on the planet, I expect you to also market yourself which is why I tell you how when you have your work published with Alpha Sutra Press. I also blog about marketing here.
You say you can just do-it-yourself, the publishing of your work? Well, I am very pleased for you! I also offer an anthology book where you can buy marketing with the price of a short story or poem and share your bio and URL to that book you published yourself. After all, there can never be too much marketing.