<p>Reminder: you can find new and unused copies of SAT/SAT II and AP review books, at practically no cost. My kids saved a ton of money buying their various prep books on Amazon. New and unused review books can be found really, really cheap - even with shipping costs included. Also remember that a prep book doesn't have to be the latest edition for your study purposes. We didn't realize this with our oldest and paid full price; with our youngest, we bought used (but unmarked, in most cases) - saved a lot of money and worked just as well.</p>