Amazon Prime的2-day free shipping想必對於在美國常在Amazon上購物的人來說真的是相當實用，雖然每年$79的年費並不便宜，但當你習慣之後真的就回不去了。(學生如果使用edu結尾的email申請Amazon student，可享有半年的免費使用以及$39/年的優惠價格續約。請參考官網相關資訊http://amzn.to/1c3Khnk。)
Amazon Student members receive six months of FREE Two-Day Shipping with Amazon Prime on eligible purchases and e-mail alerts for discounts and promotions. Discounts and promotions will be e-mailed to your Amazon.com e-mail account or made available on the Amazon Student membership page at www.amazon.com/student.
Amazon Student members will automatically continue receiving FREE Two-Day Shipping with Amazon Prime at a cost of $39 a year when their free period is over with automatic renewal.
而這邊所謂的免費延長呢？其實只是個可遇不可求的小資訊，也算是為自己的付費服務爭取應得的權利，但可能不是所有的人都知道這件事。
