Buy, sell and trade books with other students at your school in Stockton, CA. Don’t go to the local university bookstore to sell books like College Algebra; sell them at Phlybuy to get more of your money back. Shop at Stockton school markets where the book is Brand New and I bought the book but never opened it. . Search your school market in Stockton for more books by author Michael Sullivan. Stay connected with your peers as they sell books and the Heald College-Stockton market continues to grow – track their bulletins and reputation.