Intervention from your loved ones is probably the most low cost that I can think of in terms of a solution to gambling, it's free and the people that are trying to help you will do it for free, they might even sponsor your therapy in the case that you're so addicted in gambling. Intervention from your family is also a big help because that can also make you feel that you're not alone in your battle against addiction and that they still believe in you that you will be able to recover from your addiction.
Using fake money to gamble is a solution that can be used for people who want to experience gambling games without having to deposit money. They can experience many gambling games, especially slots, which have a variety of slot games from many slot providers.
By playing gambling games using fake money, they can enjoy their gambling games without having to think about gambling addiction. But if they choose to deposit their money to gamble and want to experience real gambling, at that point, they could run into problems. And it can indeed cause gambling addiction for them while they don't know how to anticipate it.
They shouldn't try to visit the casino for any purpose other than to experience any problems from gambling. Especially if they don't have self-control when playing slots, either using money or using fake money.
I'm trying to not laugh about this solution because I don't really know if it's effective but this is by far the funniest and creative solution that I've read when it comes to solving someone's gambling addiction although in the long-term, I do feel like this isn't the most optimal solution to help someone that's addicted because they're still gambling and compare that to when they gamble with real money, they now have a sort of unlimited one and they will never stop gambling.