Side bets in blackjack can significantly change the house edge of the game. For example, the Super 7s side bet has a house edge of about 3%, while the Royal Match side bet has a house edge of about 2.5%. These side bets offer the player the chance to win large payouts, but they also increase the house edge significantly. Therefore, it is generally recommended that players avoid placing these types of side bets, as they are not a good value for the player in the long run.