[quarter for your time]

I think Chuck-E-Cheese has the right idea....every game only costs one quarter.  I used to go to Aladdin's Castle when I was growing up and some games were like $1.50...if it had been one quarter they probably would have got their $1.50 anyways because it is obviously an awesome game if it costs that much and therefore I would play it over and over.  Arcades would probably even make more than they already do because people would feel like they were spending less money.  

...genius.