It is totally worth upgrading to Prime. If you have a kindle, they allow you to borrow one book for free a month, they have free two day shipping on most items, many of their shows and movies are available to watch for free, and it now costs $90. It's really handy for me because I try to make a lot of items in my home by hand, in which I need specific natural products that I can't find in my small town. So when I go to Amazon and can find the product cheaper than the outrageously expensive local stores AND I get free two day shipping, it's worth the extra money. It is also really awesome to have for Christmas time or other gift purchasing times because if you forget to buy something for someone, you can get it last minute and still have it in time. You can also share the free two day shipping with 5 people, I believe, which is a nice benefit. There are just so many perks to it.