Yes, that's how I found out about the brayer and waterproof paint. It's expensive. Brayer lets you get the thinnest possible coating.
The Brayer roller is the tool you need with the ink pallet (very similar to an ink stamp pad). Lets you get very crisp and clean results. It's been a while, but if memory serves we got a couple of rollers, ink pads, 16oz of black and white ink for a couple hundred bucks. That stencilled around two hundred cases with ink left over.
Post the apocalypse the prices are probably shocking now.