signing up for Book club deals

always getting a Book club offering me a deal and what appeals to me at the particular time. I enjoy biographys the most along with world history, Pop culture, creative minded innovative people,sports, music, Culture and Race related Books,etc.... but when you get offered books 6 for 99 cents or something then you just go and explore your choices. but i want to cover as many bases as possible and yet leave room for other options. Books speak there own language and as I glance and remind myself of books that hang off my selfs and I just sit there and think about the joy and excitement i found in first getting those books. no one place ever has all the Books I want and I still go to Used Book Stores and find certain books that are reminders of my childhood that i happen to dig. Books have a smell and idenity all unto themselves. so another offer in the mail and how tempting is this offer? I might pass on this one but not too many.