There are several websites and platforms that offer paid book reviewing opportunities. Some of them include:
1. Kirkus Reviews: Kirkus Reviews is a well-known book review publication that hires freelance reviewers to write book reviews for a fee.
2. Publishers Weekly: Publishers Weekly also hires freelance reviewers to write book reviews for their publication.
3. Online book review services: There are several online book review services that pay reviewers to write reviews of books. Some examples include Booklist Online, BookPage, and BookBrowse.
4. Freelance writing websites: Websites such as Upwork, Freelancer, and Fiverr often have opportunities for freelance book reviewers to find paid gigs.
It's important to note that paid book reviewing opportunities may vary in terms of pay rates, requirements, and availability. Make sure to research each opportunity thoroughly and ensure that it aligns with your interests and expertise in book reviewing.