I go the same route you do with the yearly membership. Only wish they had a larger number of books for the year price. I’ve found some obscure books that I had been recommending to friends (The Lost Prince, by Frances Hodgson Burnett, Regency romances by Georgette Heyer, Brewsters Millions by George Barr McCutcheon (only wish they had the Graustark books)). Revisit your childhood with the Albert Payson Terhune books, or Walter Farley. With the restrictions in numbers of books, I end up listening to favorites (like the W.E.B. Griffin military books) four and five times.
A larger number of books for the year price??? Their entire library is available!