Amazon has the ekobrew cup on sale today for only $9.39 (org. $16.95)! The Ekobrew is a reusable filter made specifically for Keurig single cup brewers. The Ekobrew is easy to use and easy to clean and allows Keurig users to enjoy the coffee of their choice and save more than half on coffee. I have one of these for my Keurig and I love it. I have saved a ton of money by refilling it instead of going out and buying more k-cups. I’m able to just use the coffee that I get on sale.