Not a major issue, I just noticed that the game should cost $50 to play but you can play without any money in you hand.  It still pays the full 15% to the player. 

Solution could be not letting you pay without the $50 in your hand or to deduct it from your winnings.

I know it is no big deal, but could be abused.  $50 is $50, particularly when you first start. If you did it every hour then you could profit extra $100  = $2400 a day (if you had no other life that is).

Check your bank. It should be taking the amount from your bank account

I'll give it a try.

Yep it comes from your account.

Sorry to bother you.