Through 7/27 buy 3 boxes of 22-24ct K-Cups and save $2 per box instantly at Staples.com. Plus, shipping is free for Staples Rewards Members or with in-store pickup. To get this discount, you'll need to add multiples of three boxes of the same flavor to your cart. For example, add three boxes of the 24-Count Donut Shop Original K-Cups, which drop from $12.99 to $10.99 each. This is the lowest price we could find by $3 per box, and works out to $0.46 per k-cup shipped. Sales tax is charged in most states.