I never play it, except when I get free rounds of it. I avoid playing these
gambling games.
Anyway, I remember playing it before: I put something between R$50 and R$100 ($10 and $20 nowadays), then I started playing the minimun amount and I managed to double the cash, but I, obviously, lost everything in the next day, when I tried to get back the money I waste on the previous day (yes, I doubled it, but started to loose more and more in just a few minutes).
Dangerous game, don't play it if you care about your money, instead, go learn more poker and play it more seriously and you may see some profits soon or later.