Stephen Pradier writes:

[Editor's note: This is a great, concise guide for collectors. One topic addressed earlier in The E-Sylum is rebinding. Here's what the site says about "Should I have my books rebound before selling them?":

Few books are worth the cost of rebinding. Rebinding also may destroy or alter some special aspect of the book that might have given it value-e.g., original covers, an autograph or bookplate on the inside cover, or original sewing construction. Books in poor condition may need to be repaired to lessen the chance of further damage, but the cost should be judged according to the book's worth - this would include, of course, the sentimental value of those books that the owner intends to keep. Conservators can construct tailor- made boxes as an alternative to expensive rebinding. A well made box will protect a fragile book and will help keep all of the parts together.]