Development costs for a crypto casino are around 3k, and from there you can build a bankroll from your first withdraws. It will pay for itself if you market correctly.
Did you create that username because you're selling a casino development service if you are, you should be an authority on this kind of topic and you can fully explain everything in detail about starting up a casino but you posting nonsense like this with no further explanation or back up your post, you should create a breakdown of that $3k because its subject for further discussion when many people are discussing casino at $100k, please don't offer a cheap looking casino if that's what your $3k can set up, its a disservice to your potential client and people will think that you just want easy money.