This variety of k-cup is $34.99 for 120 k-cups. If you do the math, that's $0.29 per k-cup.
Amazon is a bit wordier with how they named this product. They call it "Day To Day Coffee Pods, Compatible with Keurig 2.0 Brewers, Box of 120 Count Donut Blend Medium Roast Single Serve 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: