You can only withdraw what is left, so if you lose all, there'll be nothing to withdraw. The good news is, if you win you will be able to withdraw your profits as well. Pretty fair and square, isn't it?
yes, this is a good question. 
Minimum bet is 10 cents. You can make 20 bets and should be able to withdraw more then 3 dollars in btc if you choose. Everyone should be able to complete the required bets easily, if you lose beyond that it's your own fault.
I'm sorry to be serious, but it's just a question for fun The participant has a 100% chance to win $ 3 in the way that yahoo62278 guides. Personally, I like to experience my luck, I also want to know if someone can win a lot of money to withdraw and be approved. Winning a lot of money and being accepted is a basis for trusting them 
Quite eager to get $ 5 and experience my victory there 