This variety of k-cup is $19.91 for 24 k-cups. If you do the math, that's $0.83 per k-cup.
Amazon is a bit wordier with how they named this product. They call it "Twinings of London Earl Grey Flavoured Black Tea single serve capsules for Keurig K-Cup pod brewers, 12 Count (Pack of 2)".
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: