Welcome to Koster’s Collectible Books, the premier Long Island book-buying service. We proudly work with avid book collectors, families, and estate executors across Nassau County and Suffolk County, offering professional, reliable, and honest evaluations for a wide variety of library collections.

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If you are wondering where to sell rare books on Long Island, we are here to help. Below are some of the most popular book categories we purchase, though our interests are not limited to this list. If you have a collection or an individual high-value title you are considering selling, we would be delighted to hear from you.

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The Book Collections We Frequently Purchase:

• Fine Bindings & Luxury Editions: Easton Press, Franklin Library, and Folio Society editions.

• Rare & Antique Books: First editions, signed copies, and leather-bound classics.

• Specialized Non-Fiction: Local Long Island history, military history, art, and architecture.

• Niche Enthusiast Topics: Out-of-print books on hunting, fishing, and vintage automobiles.

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We Make House Calls Across Long Island, NY!

For your convenience, our local book buyers offer stress-free in-person appraisals, home pickups, and estate book-buying visits. We take the hassle out of downsizing, making it easy to sell books locally on Long Island without the burden of packing or shipping them yourself.

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Contact us today to speak with an experienced, independent Long Island rare book buyer and receive a fair, professional evaluation of your collection.