Might be. I'd certainly be able to get the blue ray player, 3D glasses, and speaker system a lot sooner that way.You may have to increase your family rental rate to TWO dollars per bulb hour, owing to how nice it is.
--Patrick
If I had more time I'd build a controller with a coin acceptor that would force us to actually pay for it as we use it.
Then I'd put one on the shower so my oldest son would have to choose between having money or having 30 minute long hot showers right before mine.