Thanks so much for your reply. My book will be published by a tiny publisher. They have helped me in a lot of ways, including creating a nice web site for me, but their promotional budget is very limited, and I know very little about marketing/promoting. Also, I am very shy, so the idea of hiring someone to help me with that side of things is very appealing. I have someone in mind, someone who handles work in my niche (spirituality/holistic health/new age) and appears to have a proven track record. She has agreed to take a look at my book, put together a proposal outlining exactly what she would do for me, and, of course, what it would cost. If I don't like her proposal, and/or if the marketing services she provides are simply too expensive, I would obviously say no. On the other hand, if I feel she has contacts that I simply don't have and that could be of genuine use to me, I think I would consider hiring her. I look at it as an investment (and all that word implies). In other words, I could hire someone and the book could still bomb, or I could try to promote it (badly) on my own, given my general shyness/lack of media contacts, etc. and really, really bomb. Or, with her help, maybe my book could do moderately well/find its niche among readers with an interest in my book's specific subject. The reason this particular publicist is on my radar screen is that she has exclusively promoted books like mine, and some of them have done quite well.
Thanks again for your feedback!
-Geena