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No I did not , but seeking for that high return in gambling is a trap or a suicide for me , I would rather play and win x2 than expecting x12.
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So you wouldn't take it because the pay rate is too high?? And if it was lowered from x12 to x2 then it'd be all good for you? I hope not, but if that's truly your logic, you should stay away from gambling in general, because it's just not for you.
What you should be looking at is the expected value of the bet - the relation of probability of winning and the pay-out rate and then consider the appropriate stake if you decide the bet is worth taking.