Cost. In the long run, you'll save the most with the reusable K-cup adapter. The costs we cite below include one cup of coffee daily brewed with beans bought for an average of $10 per pound.

The beauty of single-serve coffee pods is how easy they are to use. Just plop one of those babies into the machine, and voilà: You've got a fresh, hot cup of coffee with no mess and no fuss.

Meanwhile, KCUP’s price chart displays significant volatility, which could lead to short-lived gains. Assets often retrace after sharp movements. Furthermore, Kitty Cup’s rally lucks notable ...