TEXTBOOKS: CS 106A, ECON 51, MATH 19, MATH 51 + iClicker

Like the title says, I have some textbooks for sale.

CS106A: The Art & Science of Java by Eric S. Roberts. $115 used at the Bookstore, asking $75 OBO.

ECON 51: Microeconomics, Fifth Edition by Besanko and Braeutigam. $191 used at the Bookstore, asking $100 OBO.

MATH 19/20: Single Variable Calculus, Fourth Edition by James Stewart. Asking $50 OBO.

MATH 51: Fall 2013 course reader. Not sure if it's still being used; if it is, you can have it for $10.

iClicker: asking $20 OBO.

All books like new, with the exception of the Math 51 course reader.