On the other hand, book trailers are a thing. If you google "book trailers," you'll get a list of websites where you can post your book trailer. Many of the websites—YouTube.com is an exception—seem to be devoted exclusively to book trailers. I'm not sure how this works. I have trouble imagining that people go to websites expecting to browse book trailers. I can imagine having a book trailer on my website or sending people a link to the trailer and inviting people to view it.
In any case, I'm not at a point where I'll pay someone to create a book trailer for me. On the other hand, it appears to be relatively easy to create one myself using free tools like Microsoft Movie Maker combined with Apache OpenOffice Presentation (a free competitor to Microsoft Powerpoint). Such a book trailer would be simple: a combination of text, images, and music. A good writer should be able to put together a decent trailer. I can see that once I get past the learning curve, I'll spend most of my time searching for images and music, especially ones I can use at little or no cost. I figure: If I can make my book trailer for nothing, it could be worth every cent I put into it. I'll give it a try.—The Publishing Pro, LLC