Bibliothèque de la Pléiade

Bibliothèque de la Pléiade names 18 books; ReadingRate holds 5 of them, listed here. The most approachable of them is Water Margin by Shi Nai'an (difficulty 47/100, about 33 hours); the hardest is Frankenstein by Mary Shelley (68/100).

Questions

How many books are on Bibliothèque de la Pléiade?
18. ReadingRate holds 5 of them, each with how hard it is to read and how long it takes.
Which book on Bibliothèque de la Pléiade is the easiest to read?
Water Margin by Shi Nai'an, difficulty 47/100, about 33 hours. The hardest is Frankenstein by Mary Shelley, at 68/100.
How long would it take to read every book on Bibliothèque de la Pléiade?
About 109 hours for the 5 books ReadingRate measures, at 250 words a minute adjusted for each book's difficulty: 54 days at two hours a day.

Other lists: Penguin Classics Collection, Penguin Modern Classics, NYRB Classics, Everyman's Library, Library of America, Biblioteca Ayacucho, Heinemann African Writers Series, Oxford World's Classics, UNESCO Collection of Representative Works. All lists.