If you are addicted into gambling, yep anything can be sold and be done to play the game but you can prevent it with the help of other people or relatives. You can say that cigarettes are cheap but the effects of it into our body are far worse compare to gambling addiction. Even in our country, cigarette prices doubled in the last 1-2 years I think and it can increase more in the next years which can help those who are addicted into cigarettes because they can't afford it anymore or maybe they can but they will lessen it because of lack of funds to buy.
I really don't know why people find it hard to do things in moderation when they are not babies that are just growing, smoking cigar is a good habit, it keeps the body warm and that's the same with gambling but once it becomes an addiction it becomes a great challenge.