| 画像 | タイトル | 中古価格 | 定価 | ％ |
| Marijuana: Its Effects on Mind and Body (Encyclopedia of Psychoactive Drugs. Series 1) | ￥ 20 | ￥ 2,527 | 99 % |
| The Internet: Surfing the Issues (Issues in Focus) | ￥ 228 | ￥ 2,741 | 91 % |
| Understanding Bulimia Nervosa (Teen Eating Disorder Prevention Book) | ￥ 1,821 | ￥ 3,293 | 44 % |
| Marijuana and Your Lungs: The Incredibly Disgusting Story (Incredibly Disgusting Drugs) | ￥ 2,127 | ￥ 2,732 | 22 % |