Probably i will have to say the cost to my mistakes is loss of money, when i lose more on what i should have earn from, then it becomes a loss, in gambling, everyone of us is expected to know what could have led to the experience we have as we are playing our bets, because this goes a long way in keeping up with our various performances in playing games of different kinds, i lose the money i would have won whenever i gamble and got it wrong, anyway, its all about fun also, because we cant expect to always win, aside this, there's nothing.