Obviously, the more you bet, the more you will win for any given hand. With one exception, the win for any given hand and bet is proportional to the amount bet. However, notice that for a royal flush the win is 1000 for a bet of four coins and 4000 for a bet of 5 coins. The disproportionately high payoff of 800 per coin bet for a royal flush, with a five coins bet, is what economists would call an economy of scale. You will see this in almost every video poker game. If you don't bet the maximum number of coins, the cost of being short-changed on a royal amounts to about 2% of money bet, which is a lot. The wise video poker player will always bet max coins per hand.
So far you have learned how video poker started and grew. You have learned the basics of video poker play including return, house edge, and variance. You have learned how randomness actually works. You have also learned about several categories of video poker games that are available today. Plus you now know some methods of determining how large a bankroll you will need to play your video poker game of choice.
You will also learn the layout and importance of the pay table, as well as how to properly bet while playing video poker. You will learn and understand payback, return, house (and player) edge. You will learn about the implications of variance, sometimes called volatility. You will also learn what the term random really means when playing video poker.