Via the Five Hundy facebook group: apparently Downtown Grand now has a free Buy Bet on the 4 and 10 for $10 or more. For those non-Craps players that means you get true odds and no house edge on buying the 4 and 10. Usually there is a 5% vig or $1 per $20 bet. As far as I know this is the only casino in Vegas to offer this. Hope they still offer it during my upcoming trip.