Food that you don't make yourself is always at least two of three things: affordable, fast, and good. I think it's impossible to get all three. Maybe a fourth bubble, "Reasonably healthy" (or perhaps "Not Solidified Battery Acid on a Bun" might suit better) needs to be added.
The opinions expressed on this blog do not necessarily reflect those of Skeptic North, any of my past/present/future employers, or any of my past/present/future academic colleagues. These words are entirely my own.