I just spotted this deal over at SD for a free trial of amazon prime, and I tried it and it works! I was even able to upgrade an existing pending order to free 2nd day air. Most of the trials people are getting are 3 month, but some are 1 month (either way it should be enough for the holiday season).
Amazon prime lets you get free 2nd day air shipping with no minimum order size (compared to super saver which requires minimum of $25 order), and lets you get next day air shipping for only $4. This applies only to orders shipped from amazon.com (not to third party merchants).
1. Sign *out* of your Amazon account.
2. Go to the link above to start the free trial sign-up process (it should mention a 3 month trial).
4. You'll have to sign in again in the process
3. Follow the instructions, give CC number and billing address, etc.
5. In the end there should be a very explicit button "start my free trial"
(they ask for credit card for charging a year of prime after the trial is up, but amazon has a very easy button to click to NOT automatically charge you after trial is done, see below for details). This is 100% free if done this way as I and many others have experianced in such trials in the past.
Here's additional details (and another couple methods to try if this method doesn't work):
Also, don't worry that you might accidently get charged. If somehow you do get charged following these steps, as long as you haven't ordered anything, amazon has a cancel button on the prime page that you can use to get a full refund.
Here's the official info on how to do that and how it works:
So this is basically a risk free way to get some awesome benifits from amazon just in time for the holidays.