Kohl's offers two Keurig Green Mountain Nantucket Blend K-Cup 72-Packs for $49.98. (Add them to your cart to see this price.) Pad your order over $50 with a stocking stuffer (they start at $1.50) to bag free shipping. Plus, you'll receive $15 in Kohl's Cash. (It can be redeemed online or in-store from November 27 to December 5.) Assuming you use the cash, and excluding padding, that's $0.24 per cup and the lowest total price we could find by $45.
Of note, two Keurig Original Donut Shop Medium Roast K-Cup 72-Packs are also available for the same price, with padding for free shipping. That's the lowest total price we could find by $41.