There is a growing number of titles available as eBooks. In fact I have a couple out myself that I wrote. As far as paperbound, not sure I can be much help. But if you are interested in sites that offer various erotica titles for download feel free to PM me.
I have written two interracial novels and working on a third. My first book, Black Obsession, is loosely based on the experiences of my husband, black lovers, and me as I quickly found my new obsession to be difficult to resist. My blog is where you can find more information, of course. My second book was my first crack at an erotic fiction and I had fun writing it.