I read cozy and historical mysteries, a bit of Paranormal/UF, and to mix it up, I read science and gardening books on occasion.
I've been doing some librarian edits and happened upon the B&N site, where they're having a hell of a sale on hardcover books:
http://www.barnesandnoble.com/b/all/clearance-hardcovers-under-10/bargain-books/_/N-2dlkZ8qb
Those are all under $10 bucks and some of them look excellent - most of the ones I've seen so far are under $5. They also offer free shipping if you spend $25 or more.
I doubt I can take advantage of it (the shipping would kill any savings) but I thought I'd pass it along, in case anyone is looking to add something to their permanent collections.