This variety of k-cup is $18.99 for 28 k-cups. If you do the math, that's $0.68 per k-cup.
Amazon is a bit wordier with how they named this product. They call it "Swiss Miss Milk Chocolate Hot Cocoa Keurig Single-Serve K Cup Pods, 28 Count".
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: