Amazon offers the Martinson Coffee Single Serve K-Cup 48-Pack in Donut Shop Blend for $12.60 with free shipping, via the directions below. That's $21 under the price you'd expect to pay for this quantity at a local store, although we saw them for $2 less last May. To get this price:
1. View the Martinson Coffee Single Serve K-Cup 48-Pack for $21
2. Clip the 35% off coupon on the product page
3. Check out with Subscribe & Save for the final price of $12.60

Note: Be sure to cancel your subscription once your order ships to avoid being billed for further shipments.