Here is a link to an article about Guaranteed Play
http://media.igt.com/marketing/PromotionalLiterature/GuaranteedPlay_IGTsBigS
urprise.pdf
An interesting feature available on server based systems is going to be the
ability to change the cost per hand for different days or different hours of
the day.
"That means, Morro said, that a casino could offer 200 hands for $40 at 2
in the afternoon. "But at 4 in the morning it might be 400 hands."