Amazon Warehouse Deals via Amazon offers Prime members the Donut House Decaf Coffee K-Cups for Keurig Brewers 12-count 3-Pack (36 total) for $13.65 with free shipping. (Non-members can spend $25 or more to bag free shipping; otherwise, it adds $6.08.) That's $0.38/cup and the lowest total price we could find for this quantity by $10.