@TommyE, We have this feature if you deposit 9$, you need to wager 50% of it, as mentioned in ToS its because to avoid fraud and trading abuse, We implemented this few months back, few users where depositing BTC and withdrawing ETH with 0%, so we had to implement this cause we're not a trading site
You can clearly see the 50% wager under deposit section
Edited
Forgot to talk about this, we have 0% fees in withdrawing, the only fees there is is the blockchain part, we only take fees for the jackpot and cup mode