This variety of k-cup is $39.78 for 72 k-cups. If you do the math, that's $0.55 per k-cup.
Amazon is a bit wordier with how they named this product. They call it "Folgers 100% Colombian Decaf Medium Roast Coffee, 72 Keurig K-Cup Pods".
Some additional details about this product:
Need to know more? You can read more about this product on Amazon.
Oh, and here's a bunch of pictures if you've never seen k-cup pods before: