I go through a good bit of ink! I do fill in some block areas of my page digitally, but the majority is the real stuff. Plus hatching is a surprising culprit :'D
Paper, same story -- pretty much every page is a physical entity that I scan in, so it can add up.
Techy stuff?? It plays a role too -- hardware, software, putting out ads, the like!
An Irish enby comic creator! I make the weekly webcomic Vulgar Vulgar.