Crock-pot offers its Crock-Pot 20-oz. Lunch Crock Food Warmer in several colors (Red pictured) for $19.99. Add three to cart for $30. With free shipping and at $10 each, that's tied with our expired mention from three days ago as the lowest per-unit price we've seen. (It's the best deal for the quantity today by $20.) Each features a removable food container with inner lid, carrying handle, and detachable warming base.