I am kind of picky about which books come home to my personal library.
Reading new books or authors for free from the local library helps me save my cash for the ones that I really want.
The only exception is if I'm at a fundraiser where the books are really cheap - there is one held once a month in Pipestone, MN where most of the books $0.50 up to a dollar or two. For that price whatever looks interesting comes home. If I like it it stays - if not I donate it back the next month. There is another great one at the Minnesota Arboretum. Two years ago my sister and I attended that one and I came home with a whole stack for the cost of one hardcover. It was great!!!
Do you have some favorite book sales?