Sobering thought there, ink being 1000 bucks per gallon, certainly true of designer inks from boutique companies. Bril made in india is still affordable at 20 rupees for 60 ml, or about 1200 rupees per gallon, a little under 15 dollars. (Actually slightly cheaper if you buy a 350 ml squeeze plastic bottle for only 110 rupees, that works to about 12 dollars per gallon.)

When I use firehose stubs, such as the 2.5 or 6 ruthenium retips by Nathan Tardif from eyedroppers, I use Bril inks. I dare not use any other more expensive ink, preferring to let them through only the most parsimonious of pens, usually modern cartridge or converter pens. Modern pens, like modern cars, give excellent ink mileage….