Amazon has the 100-Count Amazon Brand Happy Belly Coffee Pod K-Cups (French Vanilla, House Blend, or Light Roast) for $29 - 25% off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel anytime) = $20 with free shipping on $35+ or with Prime. Roughly 20 cents per K-Cup.

Also available in Colombian, Dark Roast, French Roast, Donut Style,  Hazelnut, and Kona Blend for $21.