<p>What are some good sites to find some?</p>
<p>half.com 10char</p>
<p>cheapesttextbooks.com This site compares prices from a bunch of different sites. Also Amazon Prime is free to students, so if you sign up for that, you get free shipping. Remember to check where the book is being shipped from. If you chose to buy from someone who is in California, the books arrive very quickly. I’ve got three in college and this system has worked very well. Good luck.</p>
<p>uloop.com</p>
<p>Buy from your fellow UCSD students.</p>
<p>Also try Facebook Marketplace</p>