This variety of k-cup is $40.08 for 72 k-cups. If you do the math, that's $0.56 per k-cup.
Amazon is a bit wordier with how they named this product. They call it "Folgers Classic Roast Coffee, Medium Roast Coffee, K Cup Pods for Keurig Coffee Makers, 72 Count, 18 Count (Pack of 4)".
Some additional details about this product:
Need to know more? You can read more about this product on Amazon.
Oh, and here's a picture if you've never seen k-cup pods before: