How do we buy books?

We generally buy all hardcovers and trade paperbacks.
​We buy all books, all authors, all genres, all periods.
Hardcover books have to come with intact and complete jacket covers.
We do not buy water damaged books, books with underlined, highlighted, or inscribed passages or books with missing pages or significantly yellowed pages.
We do not buy stamped ex-library books
We do not buy general interest encyclopedias, law books, or travel guides, textbooks, and computer books first published more than three years ago. 
We do not buy massmarket paperback books i.e. books measuring less than 4" by 6" (the format of many romance- and science fiction novels). 
We usually don't buy foreign language titles but we buy Judaica written in Hebrew.