With a cash back, you actually get a refund of the money you deposit in your betting account. Sometimes it is the deposit cost that gets reversed or a certain percentage of the deposit you make. The benefit of such a bonus is that you receive your reward immediately; it is available without conditions.
South Korea is known as The Land of the Morning Calm, but it is the third largest economy in Asia. It is known for its food, including kimchi, which is a staple dish. Mobile online gambling is not allowed under Korean law. The government attempts to control online gambling, but access to worldwide sites is very popular.