what constitutes a “collectible” book?
http://www.rbms.info/yob.html Another guide states: Determining the value of any book is a complex matter, particularly if it is an old or unusual one. There are, however, a few broad factors that generally affect the rarity and value of a book. Demand A book is “rare” only if someone wants it and is willing to pay for it. This consideration underlies all of the rest. Many books are scarce but not in demand; they are not “rare.” Local publications often fall in this category. Books are not rare simply because they are old. In fact, many books from the 17th century can be bought for modest sums. This is even truer for books from the 19th century, when large printings became the norm. Most old family Bibles fall into this category. For many people, however, the value of such a Bible is not in its rarity but in its sentimental, family, or historical associations. Demand is often created by the popularity of a subject or author. Te