For a limited time, you can buy San Francisco Bay Fog Chaser OneCup Single Serve Coffees (80 ct.) for only $26.39 ($0.33/cup) with FREE Super Saver shipping (or with Amazon Prime).
Please note: these are not sealed k-cups, but they work in the Keurig for a single cup of coffee. You can see an image of what they look like on Amazon's site.
Be sure to check out all the Amazon deals that I've been posting for some great deals
Please note: Amazon prices tend to change quickly, so be sure to check the price before you buy.