I'll confess, my wife and I love the thing. We've been using a Keurig since college (going on 7 years now), and have been willing to look past the higher cost per cup and wastefulness of K-Cups for a long time in favor of the convenience of a hot cup of coffee, immediately brewed for you.
We're hosting family for Thanksgiving (not cooking though, thank goodness!) and she threw out the idea of getting a coffee pot instead of burning through numerous K-Cups. I was a little taken aback by the suggestion and shot it down, knowing full well in the back of my head that the cost is lower over time.
Today I started to do the math, and numbers son't lie.
I figured that the two of us consume an average of 23 cups of coffee a week at home, and our preferred K-Cups go for about $0.33/cup on Amazon. Nets out to a hair under $400 a year, which is low when compared to the rest of the world but when I saw that number my stomach turned.
With a coffee pot, I prefer 5 rounded scoops of coffee per pot, about 44 grams (1.6oz). An average pot nets about 4 generous cups of coffee for the two of us. One of our favorites is McCafe coffee, which retails for $8.97 for a 2lb container on amazon. There are 20 'pots' in this container, or 80 cups, so the cost per cup is $0.112/cup. Sometimes we are a little wasteful and don't get around to finishing the pot, I'd say worst case we consume 75% of the coffee we make, so even at worst case our cost/cup is $0.15/cup.
That's a savings of $0.18 or more per cup
Over the ~1200 cups we'll consume at home in a given year, that's a $216 savings per year! Math doesn't lie.
And every penny differential between K-Cups and drip coffee increases savings by nearly $12 a year.
So, I went ahead and ordered a Mr. Coffee with a thermal carafe today for $60, which will be offset greatly by selling the Keurig.
What about a French Press you ask? The texture of the 'grit' at the bottom is intolerable for me. I've tried 7 different French Presses and none of them are efficient about getting the grit out without an extra filter.
Personally, I'd love to do an aeropress, or a pourover, or a chemex. One day, when the kids are older, and mornings are longer and more slower I'll go that route. For now, programmable and efficient is where it's at.