A rare book dealer sells copies, not titles. Two copies of the same first edition can differ wildly in price because one has its jacket and the other does not, or because one is a first impression and the other is not, or because an author wrote a name on the front free endpaper. The buyer knows this, which is why the description has to be a bibliographic argument rather than a paragraph of praise. Alongside private collectors there is a second market most other high value sellers do not have: libraries, universities and institutions who buy against a budget year, need a quote and an invoice, and sometimes need a book held for weeks while a committee approves it. Stock is single copies, and good ones sell quickly to people already looking.
We grow rare book dealers who already sell online by working visitors, conversion rate, average order value and repeat purchases. It starts with a free written growth plan built on your own stock, catalogue and enquiry data, then a base fee plus growth share scoped in that plan.
They start with edition. Is it the true first, from the first publisher, in the first state, and what are the points that prove it. A number line, a printer's mark, a specific typographical error corrected in later printings, an advertisement leaf, the price on the jacket flap. A listing that says first edition without naming the points is asking to be doubted, and experienced buyers will simply move to the copy that shows its working.
Then condition, graded on the trade's own scale, and graded twice: once for the book and once for the jacket, because on a twentieth century first the jacket often carries most of the value. Buyers want to know if it is price clipped, whether the spine has faded, whether there are closed tears or chips, whether it is a supplied jacket from another copy, and whether it is in a protective sleeve. For the book itself they want the binding, the boards, the hinges, foxing, tanning, previous owner inscriptions, bookplates, library markings, and whether it is complete with all plates and maps.
Signed copies split further. A flat signature, an inscription to a stranger, an inscription to someone who matters, and a presentation copy from the author are four different things at four different prices, and the buyer wants to know which one this is and how you know.
Then the ordinary questions. Packing, insurance, customs paperwork for an international shipment, and whether it can be held while funds are arranged.