That question is impossible to answer definitively. It ultimately depends on the individual book, its target audience, and the marketing budget or resources available to promote it.
If you believe in the book and are confident that you can reach the right people to market it, then you may want to consider marketing it. Be sure to do your research; keeping your budget in mind, make sure you understand the various channels and techniques available. Consider starting with some smaller, more affordable methods such as word-of-mouth or online advertising. Test the waters to see which ones are the most effective and cost-efficient.
That being said, marketing a book is no small task and may take some time. If you don't have the resources or the capacity to invest much yourself, it may be worth considering hiring professionals to help promote your book.
Ultimately, the decision is yours and it should be based on what you feel is the best way to get your book to the right people.
