The daily profit from a casino’s point of view. Usually the win amount is calculated per day, and refers to the [amount played on the game] – [amount paid back to the player]. This value is often used to gauge how well a gaming machine or a table is performing in a casino.
とあるスロット機1台のWin per dayが$100の場合、カジノはこの1日でその機械から$100を設けたことになる。)
(売上高とは別に計上されるため、いくらの額が動いたはwin per dayだけでは把握出来ない。