The best way to keep your costs low is to proofread carefully at every step. Your costs start to increase if we have to go back and forth with multiple revisions of your files. Try to give us trouble-free "ready-to-print" files from the beginning. Next, make absolutely sure that thePDF proof that you approve is correct. We give you this proof so that you have an opportunity to find errors, yours and ours, BEFORE the books are printed. If there are errors that go undetected in the proofreading, we cannot reprint your books for free. The best we'll be able to do is make the corrections to your files so they are right for the next printing. You will not encounter additional costs to fix your files if it is our fault. View our "There is an error with my book" link.