It should not come as a shock to anyone that these single serve coffee machines have taken off everywhere. Phillips probably had the first major one in North America with their Senseo but along came the giants at Green Mountain Coffee with Keurig who took over the market. There are a bunch of competitors, but the one I see the most is Kraft's Tassimo.
These machines have become very popular at offices too, which is why Staples has them on sale. Employees can make coffee quickly and cleanly and get back to work. Fortunately for us Staples also sells to the unwashed masses so we can get good deals on coffee too. Since these packs of coffee generally don't cost a lot you won't be saving boat loads of cash with this deal but 10% is 10%. If you are in the mood to stock up and get a bunch of coffee, however, this could be a significant savings.
Keurig or Tassimo? Home brew or coffee shop? Let me know in the comments below!