For players who do not know much about card counting—real card counting, not the stuff that they show in movies—there is pervasive idea that card counting blackjack players are rich and that they win every time which is what makes them rich.
This would be an inaccurate idea about card counting.
Now a betting system, those require a large bankroll due to their need to double and double and continually double wagers in order for the system to be used. Note that I said ‘used,’ not ‘work.’ That is because betting systems do not work.
Anyway. Card counting bankrolls.
The beauty of card counting is that you can use any size bankroll. No joke. You can play with $100 or $10,000. It boils down to what the table minimum is and how much you are betting per round.
If you are starting out with a smaller bankroll you need a blackjack table with a lower table minimum. That minimum will be you base wager. As the count swings up into the positive slowly begin to raise the amount of your wager. Do not jump from $10 up to $50. That is called a give-away. It is bad and it tips the dealer and pit boss off that you are up to something. Then they will watch you and watch you and put pressure on you until you either quit counting or they will escort you out.
The point is that you can start out with a small bankroll and slowly work your way up. You are not going to win every single hand in blackjack if you are card counting. But if you follow the count and subtly increase you wagers as the count goes positive, you can increase your bankroll. Being rich is not a necessity with card counting.