Probably the largest cost of the Keurig coffee maker are the Keurig single serve coffee cups. These can cost $. to $ per K cup, depending on thend and flavors. Most of these will have to be purchased in boof or more. The Keurignd has hundreds of flavors..Cost for a Keurig Brewer. The cost of the Keurig depends on which model best fits your needs. On the low end of the price range, the smallest and slowest model, the K, will cost $ The K has larger capacity and better s.d and will cost you $., while the K is $., and the K is $ .