The annual library book sale began yesterday and runs through Sunday.  More than 500,000 books are on sale and some are even conservative/libertarian.  The prices drop on Saturday and Sunday.  For example, on Saturday hard covers are $2 and paperbacks are 50 cents.  I go on Sunday when you can get a box of books for $5 and a bag for $2.  They provide the boxes and bags, but I take a hand truck to handle the full boxes.  See details here.