Shakespeares First Folio Sold $10 million 2. but they could also make you rich. Sure, most of the books described below are still signed first-editions, but instead of something totally unaccessible like Shakespeare's Folio think more along the lines of Stephanie Meyer's Twilight or Dan Brown's The DaVinci Code. By subscribing to this BDG newsletter, you agree to our. Instead, their monetary value is based on certain factors that are being discussed in this article. See the comprehensive guide from BookScouter. Hard Cover with dust jacket. AbeBooks is very useful for finding an approximate value of a book but don't use that value for insurance purposes. The dust cover will also need to be in good condition to get the highest price for a book; without it, the value of your book may plummet as much as 50%. The publication date of an antiques first edition can also be used to determine its authenticity. The Tiger Who Came to Tea (1968), 641. See how much you can make. Rare Books. 20 Iconic Books You Probably Own That The Codex of Leicester Sold $30 million, Factors influencing the value of antique books. Another determining factor in the value of antique books is demand; no matter how rare old books are, they may have no market value if they are not in high demand. Books worth So it makes sense that any signed copy of Rowling's books would be incredibly valuable. Also, to determine the value of an antique, you should check the book market to see how many similar copies are available. A mint condition "Omega Supreme" still in its original box is reportedly worth around $2,000. The title page must also be in good condition, especially if the book has more than one publisher. Copies have sold for as much as $350 on AbeBooks and you can find some online now for up to $150. Search carefully and avoid spelling mistakes. You want to keep your books standing up on a flat surface. Cookbooks, medical books, and certain art or design books are easy to find at thrift stores and have potential to be valuable because of their collectibility. A 100-year-old book can be preserved by storing it away from heat and moisture, or by duplicating it. The 36 plays in Shakespeares First Folio were put together by two of his close friends, Henry Condell and John Heminge. The four Winnie-the-Pooh books (1924-1928), A.A. Milne.