$20
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Selling the Math 51 Levandosky textbook for $20.
The Stanford bookstore sells it at a ridiculous ripoff, don't buy it there.
Amazon runs between 30-40 depending on season.
Buy it from me for $20 and ensure that the only reason you cry is because of the class material and not the silly price of the textbook!
Amazon link, for reference: https://www.amazon.com/Linear-Algebra-Steven-Levandosky/dp/0536667470/ref=sr_1_1?s=books&ie=UTF8&qid=1474172765&sr=1-1&keywords=linear+algebra+steven+levandosky
Please do not message this poster about other commercial services.