- Meet buyers/sellers in public areas on campus where there are lots of people.
- Only accept cash, and make sure it's genuine. No PayPal/Cheques.
- Flip through the book you're buying to make sure it's in the expected condition.
- If you have multiple books for sale, post separate ads for each to give them more visibility.
- 99% of the time you can safely buy an old edition of the book, even if your professor tells you to get the new one.
- If you made a mistake while posting your ad, please edit it instead of posting another one.