That's just what HP wants you to think. Think about, you only really need half a page at any one time. They're just up charging you so they can sell more printer!
Because we live in the real world where you still need to physically print, sign, and return things. Lol, sucks, but that is life.
It's not often, and when the need arises, it's usually important, so a laser printer is there when you need it and works without fuss (or having the ink dry up during long periods of dormancy)