Acknowledged author Arthur OSullivan wrote Microeconomics: Principles, Applications and Tools, Student Value Edition Plus MyLab Economics with Pearson eText -- Access Card Package (9th Edition) comprising 420 pages back in 2016. Textbook and etextbook are published under ISBN 0134420772 and 9780134420776. Since then Microeconomics: Principles, Applications and Tools, Student Value Edition Plus MyLab Economics with Pearson eText -- Access Card Package (9th Edition) textbook was available to sell back to BooksRun online for the top buyback price of $30.36 or rent at the marketplace.