Generally, the minimum bet for blackjack at a casino can range from as low asR$5 to as high asR$100 or more. The minimum bet may also be higher during peak hours or on weekends. In addition to the minimum bet, the cost to play blackjack can also depend on the specific rules and payouts of the game being played.

Blackjack and 21 are essentially the same game, with the objective being to reach a hand value of 21 or as close to it as possible without going over. In some cases, the term "21" may be used to refer to the game played in a casual setting, while "Blackjack" is often used in a casino context.