I recently signed up with MockupShots – it's like BookBrush, but instead of an annual or monthly fee, it's a one-time purchase. You can upload your book cover and it will put it into a couple hundred images, such as people holding the book or the book on a table or desk (as you see from these sample pages with one of my books).
Obviously not all images will be right for each book, but you should find several – likely dozens – that are suitable. It's a good way to do "photo shoots" of your books without having to actually set up a photo shoot. You can also do video mockups and cover reveal images, and you can edit the images via the site.
This month only, it's only $77 for *lifetime* use (normally almost $200). I love lifetime deals, because that one time fee usually pays for itself in a matter of months.