Buy one Donut Shop 36-count Medium Roast K-cup Pack or Green Mountain 36-count Breakfast Blend K-cup Pack for $17.99 and get a second one for 50% off in cart at Target.com. Plus they ship free. This works out to be $26.98 for two 36-count packs, or $0.37 per cup. This is a savings of 25% and the lowest price we found anywhere. Check out these select Donut Shop 18-count K-Cup Packs and Green Mountain 18-count K-Cup Packs which qualify for the buy one, get one 50% off sale. Also get three packs of Starbucks K-Cups 16-count for $11.99 each, and $6 will be deducted in cart. This makes each of these packs $9.99, and works out to be $0.49 per cup. Note that the site indicates under each K-cup picture, if they are eligible for the discount. Sales tax is charged in most states.