<p>I bought two ACT books to help me study for the test, the Official ACT Guide and Barron's ACT 36. I only did/made marks on the first test in the Official Guide, and never even opened the Barron's book. Since then I've decided to focus on the SAT because I did significantly better, and just forget about the ACT. Now I'm left with two perfect books and nothing to do with them. I want to sell them, and get some money back but I don't really know how. Any thoughts?</p>
<p>TL;DR: I have two ACT prep books in pristine condition that I no longer want/need. What should I do with them? I don't want to just toss them since that's such a waste. Could I use them to study for the SAT or will that screw me up too much?</p>