The difference from Place bet odds to true odds when buying the 5, 6, 8, or 9 are so small that the 5% commission you are paying could lose you money. If you decide to take your Buy Bet down after it wins, you won't need to pay commission a second time. Once a Buy bet wins, you must pay the same commission to keep the bet up to win again. Like many other bets on the table, you must bet Place Bets in certain increments, and they pay differently depending on which number you're betting.