Some of users saying that is enough amount for start casino business. But I will suggest don't start with such as amount. Perhaps this amount is enough to build and run your platform but this isn't enough to continue serving. Especially you need a good amount of Bankroll even you may gather it from your friends or partner. On the other hand you are unable to earn money instantly from your platform without advertising. Believe me, there is some press release agency who publish article on different crypto related news portal sites, they will ask more than $25K for publishing your articles. Although it's not mandatory but you have to go some other advertising platforms otherwise. So start with more good amount.