Passive income: YES

Earning passive income solely from selling low content books online can be achievable with the right setup and strategy. Many successful sellers have automated processes for researching, creating, and publishing books, as well as outsourced tasks like cover design and formatting. By leveraging print-on-demand services and optimizing keywords for discoverability, some sellers have reached a level where income comes in consistently with minimal ongoing effort. However, this level of passive income is typically reached by a minority of sellers, with many needing to actively manage and promote their book listings to maintain sales. It's crucial to set realistic expectations and be prepared to put in initial effort to establish a profitable catalog of books.