| Unended Quest (Routledge Classics) Popper, Karl / New - Hardcover | Biblios | | $173.42 |
| Unended Quest: An Intellectual Autobiography Popper, Karl (Author) / New - Hardcover | Revaluation Books | | $158.09 |
| Unended Quest (Routledge Classics) Popper, Karl / New - Hardcover | Books Puddle | | $152.68 |
| Unended Quest Popper, Karl Raimund / Used - Hardcover | GreatBookPricesUK | | $139.83 |
| Unended Quest: An Intellectual Autobiography Sir Karl Popper / New - Hardcover | THE SAINT BOOKSTORE | | $139.16 |
| Unended Quest Popper, Karl Raimund / New - Hardcover | GreatBookPricesUK | | $139.14 |
| Unended Quest Popper, Karl Raimund / Used - Hardcover | GreatBookPrices | | $134.68 |
| Unended Quest: An Intellectual Autobiography Popper, Karl Raimund / New - Hardcover | BennettBooksLtd | | $131.53 |
| Unended Quest Popper, Karl Raimund / New - Hardcover | GreatBookPrices | | $129.80 |
| Unended Quest: An Intellectual Autobiography (Routledge Classics) Popper, Karl / Used - Hardcover | BooksRun | | $124.40 |
| Unended Quest: An Intellectual Autobiography (Routledge Classics) Karl Popper / New - Hardcover | Chiron Media | | $110.37 |
| Unended Quest: An Intellectual Autobiography (Routledge Classics) Popper, Karl / New - Hardcover | Griffin Books | | $100.00 |
| Unended Quest: An Intellectual Autobiography Popper, Karl Raimund / Used - Hardcover | dsmbooks | | $87.12 |
| Unended Quest: An Intellectual Autobiography Karl Popper / Used - Hardcover | JuddSt.Pancras | Dust Jacket | $64.67 |
| UNENDED QUEST an Intellectual Autobiography Popper, Karl / Used - Hardcover | J. Wyatt Books | Fine/VG+ Dust Jacket | $57.50 |