How the comparison works
Credit plans (Audible Premium, Libro.fm) cover one book a month; books beyond that are bought at the member price. Audible Standard covers one book a month and charges full price for more. Spotify counts hours, not books: Premium and Audiobooks Access include 15 hours a month, then the cheaper of Audiobooks+ and top-ups is added. Everand unlocks 1, 3 or 5 titles a month. All figures are monthly averages.
One thing a price can’t show: with Audible and Libro.fm the books stay yours; with Spotify and Everand they go when you stop paying.