| The Cambridge Edition of the Works of Schopenhauer: Schopenhauer: On the Fourfold Root of the Principle of Sufficient Reason and Other Writings Arthur Schopenhauer / New - Hardcover | Kennys Bookshop and Art Galleries Ltd. | | $336.99 |
| The Cambridge Edition of the Works of Schopenhauer: Schopenhauer: On the Fourfold Root of the Principle of Sufficient Reason and Other Writings Arthur Schopenhauer / New - Hardcover | Kennys Bookstore | | $284.03 |
| On the Fourfold Root of the Principle of Sufficient Reason and Other Writings Schopenhauer, Arthur;Cartwright, David E. (EDT);Erdmann, Edward E. (EDT);Janaway, Christopher (EDT) / New - Hardcover | GreatBookPrices | | $193.84 |
| On the Fourfold Root of the Principle of Sufficient Reason and Other Writings Schopenhauer, Arthur;Cartwright, David E. (EDT);Erdmann, Edward E. (EDT);Janaway, Christopher (EDT) / New - Hardcover | GreatBookPricesUK | | $172.21 |
| On the Fourfold Root of the Principle of Sufficient Reason and on the Will in Nature Schopenhauer, Arthur;Hillebrand, Karl (TRN) / New - Hardcover | GreatBookPricesUK | | $85.07 |
| On the Fourfold Root of the Principle of Sufficient Reason and on the Will in Nature Schopenhauer, Arthur;Hillebrand, Karl (TRN) / New - Hardcover | GreatBookPrices | | $59.35 |
| On the Fourfold Root of the Principle of Sufficient Reason, and on the Will in Nature; Two Essays Arthur Schopenhauer Mme Karl Hillebrand / New - Hardcover | Books Puddle | | $49.37 |