The craps BUY LAY button is 1¼ inches in diameter and has the words “BUY” one side and “LAY” on the other side engraved into the chip. The thickness of the button is about 1/8 inch thick. This is the same one as used in the casino.
Buy Bets are exactly the same as Place Bets except by paying a 5% commission on the Buy Bet, you receive the true odds as shown on the chart. Buy Bets are inactive on the Come Out roll unless called “on” by the player. A Buy button denotes this bet.
You may Lay a bet against 4, 5, 6, 8, 9 or 10 at any time. In order to do so, you must pay a 5% commission based on what you could win. Lay Bets always work. Check the chart for the payoffs. A Lay button denotes this bet.