With all that said I totally agree that with the price of these books it should not be a concern at all, but with a little research, a couple of small paint brushes and a modicum of physical ability one can do some repairs to good as new if not better. I personally have done repairs to the extent of where two signatures in the middle of a book had started to separate and you could see the muslin in the crack, back to good as new. All that holds those signatures together is a strip of glue applied between the two sheets. If you notice even in a sewn book where to signatures join it never quite opens up as fully as the middle of a signature. There is a great informational thread buried somewhere on this board where Cerd the Nerd goes pretty in depth on this with pictures. I highly recommend also doing some googleing about book binding and construction it actually helped me to stop freaking about the possibility of these books falling apart once I understood better about the whole process and pieces.