While I was at work today (I work for Amazon.com customer service) I just found out about a great new promotion from Amazon.com. Students with a valid email address at a college (one that ends in .edu) can get a year of free Prime shipping. That's the free 2-day shipping from Amazon! I paid $79 for my year of Prime, so this is really a good deal.
Here is the link with more info, pass this on to any college students you know, and if they have questions, they can ask me, since I work for Amazon and know the website pretty well.
Join Amazon Student