This is a great deal for some pretty good india ink. Unlike other reviewers, I bought this to use in an airbrush. I wanted large quantities of ink to use in practicing freehand airbrush (e.g., figure drawing, experimenting with templates). It is too pricey to use good airbrush paint for this purpose. So far I have nothing but good things to say about this ink. It flows well in my airbrushes without being reduced. I have been using it with a general purpose 0.3mm nozzle/needle combination, but I think it would be fine in a 0.2mm or 0.15mm gun as well. It is consistent, doesn't lead to much tip dry, and has a nice sheen on paper. At the price I bought three bottles. For those of us running 0.5mm or larger guns, you can clear out an ounce of ink pretty quickly. At standard prices that gets expensive, but with these bottles it is affordable.