This variety of k-cup is $31.04 for 80 k-cups. If you do the math, that's $0.39 per k-cup.
Amazon is a bit wordier with how they named this product. They call it "AmazonFresh 80 Ct. K-Cups, Decaf Colombia Medium Roast, Keurig K-Cup Brewer Compatible".
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: