How many hours should a single player game today be to warrant a sixty dollar purchase?

[S.T.A.G.E.]

NightDragon83 said:
Boy are you people spoiled today. Back in the day there were SNES games that I beat on my first play through that cost $60 or more, and in today's $$$ that's close to $100.

Are you associating it with inflation as the times have gone by?