What is the most frequently asked question in the used and rare book field? What is my book worth?
- by Bruce E. McKinney
May I quote Zero Mostel?: Money, Money, Money
Everyone in the rare book business is asked everyday “what is my book worth?” and the question almost always gets a careful listen because once in a great while the book or books you have are very good. But that said, the process is time consuming and rarely successful for the person providing perspective.
For people who have these questions there are a few straightforward ways to find out, without spending a dime or anyone’s time. You should go to the listing sites; Biblio, Alibris, Abebooks or Rare Book Hub that provide listings of books for sale. Or, if you are diligent, go to all of them. There you will get a free appraisal simply by putting the author last name, a few words from the title, and the date published into the advanced search fields. Then BINGO you get a variety of answers. Now what should you do?
The chances are the book you are looking up will match almost identical copies offered for sale. And then low and behold you notice someone is offering a copy for $500.- “These people must be smart because they know something that the other fools, who have priced theirs at $75, don’t.” This then leads to the cracking open of a beer or sarsaparilla followed by: “Wow Daddy, we’re rich” because you have boxes of books to look up and $500.- times all the books you have is – let’s see – a New Car, in fact a German one, possibly a 7 series, a convertible at that.
If only it were that easy.
Looking up books that are listed for sale is easy and I suggest doing it before you seek free advice. Unfortunately, the expensive copy listed that you find has probably been posted by a nut who is determined not to leave a penny on the table. It is not illegal to put a crazy asking price on anything.
Now you start to study your copy and quickly confirm you’re an optimist. By reading the descriptions that others have written you start to see some differences though. The term “with original artwork” sounds good until it’s disclosed that Maria, the seller’s daughter and no relation to the author, when she was 3, colored in the pictures. Sorry! Somewhere else you noticed the term “original color.” This must be what it means. This is too easy.
I suggest you make a list of the books you have because they are going to start to blur.
Try to be honest. Try to grade them. Make notes about anything that appears to be missing such as, “it’s complete except for 1 page” which is usually the title page. Ouch! OR, you only have one page – the title page – and you heard that if a book is missing its title page it loses at least 90% of its value. That must mean the title page, by itself is worth 90% of what the whole book is worth. No! No! and No!
About 1 person in a 100 is going to find they have material of saleable value. If you are the lucky one now you can call dealers or whoever you consult. They’ll be looking for evidence of retail prices at and above $500 not including the person who listed their $75 book for $500.
For those books you conclude are valuable you’ll want to offer them in list form, with pictures of the higher value examples, to a specialist in the category of which your book or books is a part. In other words, don’t expect a specialist in opera to know much about your Life of Lincoln [unless it was made into an opera].
Many people will be willing to help but don’t abuse their trust. Do a little bit of homework and identify the things you have that are of value.
Ultimately you are going to sell the material. If you sell to a dealer you’ll get less money [because, once they buy your copy, they’ll assume its market risk]. Their distinct advantage is that they usually pay on the spot. Many, many people take that deal. Others will opt to send their material to auction and it will be roughly 6 months from submission until you receive payment [the amount of which will not be known until the book sells].
Now get started. A few beers from now you can go online to Mercedes Benz to plan your purchase.
If you need further help, after determining your material is probably of substantial value, you can contact us or a professional advisor. Here is one:
Forum Auctions Fine Books, Manuscripts and Works on Paper 26th March 2026
Forum, Mar. 26: Book of Hours.- Heures a lusaige de Romme, printed on vellum, with 14 full-page illuminated miniatures, Paris, N. Higman for J. de Brie, [c.1521]. £20,000-30,000
Forum, Mar. 26: France.- Book of Hours, perhaps Use of the Abbey of Saint-Gildas de Rhuys, with thirteen miniatures surviving from an original cycle of at least twenty, [c. 1430]. £15,000-20,000
Forum, Mar. 26: Milton (John). Paradise lost. A Poem in Ten Books, first edition, Pforzheimer's sixth state, S. Simmons, 1669. £8,000-12,000
Forum, Mar. 26: Blake (William). Illustrations of the Book of Job, one of 215 first issue "Proof" copies, this one of 65 copies on "French" paper, Published by the Author, March 8, 1825 [but March, 1826]. £15,000-20,000
Forum Auctions Fine Books, Manuscripts and Works on Paper 26th March 2026
Forum, Mar. 26: Christie (Agatha). The ABC Murders, first edition, The Crime Club, 1936. £15,000-20,000
Forum, Mar. 26: Halley (Edmund). Astronomiae Cometicae Synopsis, in Philosophical Transactions of the Royal Society, no. 297, pp.1882-99, March 1705. £10,000-15,000
Forum, Mar. 26: Haytham (Ibn al) [known as Alhazen]. Opticae Thesaurus...Item Vitellonis Thuringopoloni libri X..., first edition, Basel, August, 1572. £20,000-30,000
Forum, Mar. 26: Kepler (Johannes). Dioptrice seu demonstratio eorum quae visui & visibilibus propter conspicilla non ita pridem inventa accidunt, first edition, Augsburg, David Frank, 1611. £12,000-18,000
Books & Autographs Wednesday 25 March
Koller, Mar. 25: KAFKA, FRANZ, SCHRIFTSTELLER. Eigenh. Brief mit Unterschrift. Prag, 20. Oktober [19]15. CHF 30,000-40,000.
Koller, Mar. 25: EINSTEIN, ALBERT. Zwei eigenhändige Briefe an Ernst Gabor Straus, unterschrieben "A.E" bzw. "A. Einstein". [Princeton], [19]45. und [1950]. CHF 30,000-40,000.
Koller, Mar. 25: HORTENSE DE BEAUHARNAIS, MUTTER VON NAPOLEON III. Album aus ihrem Besitz mit 69 Aquarellen und Pinselzeichnungen in Sepia oder Grau… CHF 14,000-18,000.
Koller, Mar. 25: ZOOLOGIE - ORNITHOLOGIE - Seligmann, Johann Michael. Verzameling van uitlandsche en zeldzaame Vogelen. Teile 1-8 (von 9) in 2 Bänden. Mit 421 prächtig altkolorierten Kupfertafeln. CHF 14,000-20,000
Koller, Mar. 25: BOTANIK - Berlèse, Lorenzo und Johann Jakob Jung. Iconographie du genre camellia... 3 Bände. Mit 300 Farbstichtafeln "a la poupée.” Paris, [1839-]1841-1843. CHF 12,000-18,000.
Forum Auctions Natural History: The remaining stock of Antiquariaat Junk, 1899-2026 25 March 2026
Forum, Mar. 25: Botany.- Andrews (H.C.) Coloured Engravings of Heaths, 4 vol. in 2, first edition, [1710,--94]-1802-1809-[1830]. £10,000 - £15,000.
Forum, Mar. 25: Butterflies.- Cramer (Pierre) and Caspar Stoll. De Uitlandsche Kapellen voorkomende in de drie Waereld-Deelen…,, 5 vol., Amsterdam & Utrecht, 1779-91. £8,000 - £12,000.
Forum, Mar. 25: Voyages.- Darwin (Charles) and others. Narrative of the Surveying Voyages of His Majesty's Ships Adventure and Beagle, 3 vol. in 4, including Appendix to vol.2, first edition, 1839. £8,000 - £12,000.
Forum, Mar. 25: Butterflies.- de Graaf (Willem Diederik Vincent). [Inlandsche Kapellen in beeld], 170 fine original watercolours, [Enkhuizen], [1800-40]. £8,000 - £12,000.
Forum Auctions Natural History: The remaining stock of Antiquariaat Junk, 1899-2026 25 March 2026
Forum, Mar. 25: Birds.- Dresser (Henry Eeles). A History of the Birds of Europe, 9 vol., including supplement, first edition, by the author, 1871-96. £6,000 - £8,000.
Forum, Mar. 25: Zoology.- Felines.- Elliot (Daniel Giraud). A Monograph of the Felidæ or Family of the Cats, first edition, for the Subscribers, by the Author, [1878]-1883. £25,000 - £30,000.
Forum, Mar. 25: Birds.- Frisch (Johann Leonard). Vorstellung der Vögel Deutschlandes, 2 vol., first edition, Berlin, Friedr. Wilhelm Birnsteil, [1736]-1763. £40,000 - £60,000.
Forum, Mar. 25: Birds.- Gould (John). The Birds of Great Britain, 5 vol., first edition, by the author, 1862-1873. £30,000 - £40,000.
Forum Auctions Natural History: The remaining stock of Antiquariaat Junk, 1899-2026 25 March 2026
Forum, Mar. 25: Pomology.- France.- Poiteau (A.) Pomologie Française. Recueil des Plus Beaux Fruits cultivés en France, 4 vol., Paris, 1846. £30,000 - £40,000.
Forum, Mar. 25: Botany.- [Robin (Jean)]. Histoire des Plantes, nouvellement trouvées en l'Isle Virgine…,, 1620; with Geoffrey Linocier L'Histoire des plantes, second edition, 1619-20. £3,000 - £4,000.
Forum, Mar. 25: Asia.- Japan.- Siebold (P.F. von). Nippon. Archiv zur Beschreibung von Japan, 7 parts in 6 vol., first edition, Leyden, [1832]-1852. £35,000 - £45,000.
Forum, Mar. 25: Asia.- Valentijn (Francois). Oud en Nieuw Oost-Indiën..., 5 vol. in 8, first edition, Dordrecht [&] Amsterdam, 1724-26. £8,000 - £12,000.
Forum, Mar. 25: Botany.- Australia.- Redouté (P.J.).- Ventenat (Étienne Pierre). Jardin de la Malmaison, 2 vol.,, Paris, 1803-04[-05]. £30,000 - £40,000.