Math 53, Econ 50, Econ 1A, PRS, Chem 31X Books for sale

All lightly used. Don?????t hesitate if you have any questions.

Class/book/ price/ bookstore price used/ new
Math 53: (Differential Equations: Brannan. Boyce) $95 bookstore: $122.50/ $163
Econ 50: (Microeconomics: Besanko. Breautigam) $40 bookstore: $153.00/$203.75
Chem 31X: (Chemistry: Oxtoby 4th) $100 bookstore: $188.50/NA
Chem 31A/B: Chemistry Structure & Dynamics (Spencer) $70 bookstore: $122.50/ 163.25
Econ 1A: (Economics 6th, by Taylor) $65 bookstore: $173.50/ 231.25
(Not world crisis edition, but almost identical; you can check it out beforehand)
PRS Transmitter: Interwrite PRS (newest one) $28 bookstore: 40.50/ 53.75
Chem 33/35/ 131: (Organic Chemistry: Vollhardt 5th) $75 bookstore: ??