阅读以下文章，完成3个问题。
Discover
   News magazine of science devoted to the wonders and stories of modern science, written for the educated general reader. A truly delightful family science magazine, each issue brings to light new and newsworthy topics to make dinnertime and water-cooler conversations interesting.
   Cover Price: $ 59.88
   Price: $19.95 ( $1.66 / issue )
   You Save: $39.93 ( 67% )
   Issues: 12 issues / 12 months
Self
   Published by Conde Nast Publications Inc., Self is a handbook devoted to women’s overall physical and mental health. Every issue contains usable articles such as “Style Lab”, in which wearable clothes are mixed and matched on non-models and the “Eat-right Road Map”, with tips on how to eat properly.
   Cover Price: $35.86
   Price: $15.00 ( $2.5 / issue )
   You Save: $20.86 ( 58% )
   Issues: 10 issues / 12 months
In Style
   In Style is a guide to the lives and lifestyles of the world’s famous people. The magazine covers the choices people make about their homes, their clothes and their free time activities. With photos and articles, it opens the door to these people’s homes, families, parties and weddings, offering ideas about beauty, fitness and in general, lifestyles.
   Cover Price: $47.88
   Price: $23.88( $2.38 / issue )
   You Save: $24 ( 50% )
   Issues: 10 issues / 12 months
Wired
   This magazine is designed for leaders in the field of information engineering including top managers and professionals in the computer, business, design and education industries. Wired often carries articles on how technology changes people’s lives.
   Cover Price: $59.40
   Price: $10.00 ( $1.00 / issue )
   You Save: $49.40 ( 83% )
   Issues: 10 issues / 12 months