The difference is that you must pay the casino a commission instead. This reduces the house edge from 6.67 to between 1.76 and 4.76. When you make a buy bet, you eliminate the house edge and get the 2:1 payout odds. So, now you know! The next time you’re playing craps, and you see someone betting the Big 6 and 8, you get to be the one to ask, “What were you thinking?” People love that. This difference in odds creates the house edge of 6.67 for the casino. So, if a 7 comes up on the first roll, your place bets are safe (they don’t pay if a 6 or 8 is rolled, but you don’t lose them with a 7), while you can say so-long to your Big 6 and 8 bets. One subtle difference between placing the 6 and 8 and betting the Big 6 and 8 is that the Big 6 and 8 is always “working,” while place bets are, by default, “off” (or not working) during the “come out” roll. Its called Iron Cross because when you place all the. Remember, just like with the Big 6 and 8, you can take your place bets down at any time. This is perhaps the most popular strategy for the game of Craps.