Private Reserve makes nice ink, but the price for this drop is nothing special. I can pay 14¢ more per 12 pack (Bertram's Inkwell) and have whatever and colors, in whatever numbers, I want delivered within a few days. If I want 12 or more packs at once I can do even better (Fountain Pen Hospital).
tehbizzThe point was that for only a few cents more you can get the cartridges much faster and in smaller, or larger quantities. That's assuming the drop reaches the lowest price point. If it doesn't, then Bertram's Inkwell is less expensive than the drop.