Register your system and get a coupon code by email for buy two boxes (22-24 ct box) get two free with free shipping and a member 15% discount. Comes out to 30 cents each....

Here are the instructions:

1. Create an account and register [keurig.com]. This will allow you to get a 15% discount on their k-cups and additional coupons

2. Once signed in, go to my account and under "My Brewers" --> Register a new brewer
Each account is allowed 3 brewer registrations

3. You can make up the brewer purchase information. S/N is in the format 77.0000.xxxxxxx (replace x's by any number you want)...

4. Once your brewer is registered you should get a code emailed to your account.

5. Use code at checkout to receive 2 free boxes of k-cups when you buy 2 boxes. Most boxes are 24-ct on the site.