My husband and I are both hopeless book addicts. We buy anywhere we find what we are looking for. Wal-Mart, Target, and Sam's are great if they have what you need, but we usually buy our books at Books-a-Million or Waldenbooks. There is a great Barnes & Noble in Columbus, GA, but that's an hour away, so we don't get there often. We usually buy paperbacks, unless we are collecting a particular series in hardcover.

(edited because I unintentionally used an abbreviation)