House edge on place bet of 12 on crapless craps

I am not good with math, so can someone assist me in calculating the house edge on a $35 place bet of 12 on a crapless craps game?
On this table the casino offers a free buy of the 12 and pays 6 to 1. You only have to pay a vig when rolled. You can place it for up to $35 and only pay a $1 vig. So essentially a $35 place bet of 12 pays $209. What would the house edge be?
Thanks

Let's walk through it so you can get better.

First question: What's the probability of winning? Of losing?

It is a buy bet. Not aware of any casino that doesn't buy at $20. The real question is; vig on win or up front? On win, it will be the lowest vig, bet on the table, outside of odds. I'm sure ME will give you that number.

Nothing like the stupidity of offering free buys on the 4, 5, 9, and 10, and taking vig up front on the 2, 3, 11, and 12.

Quote: dustin88bd

I am not good with math, so can someone assist me in calculating the house edge on a $35 place bet of 12 on a crapless craps game?
On this table the casino offers a free buy of the 12 and pays 6 to 1. You only have to pay a vig when rolled. You can place it for up to $35 and only pay a $1 vig. So essentially a $35 place bet of 12 pays $209. What would the house edge be?
Thanks

For the benefit of others, the bet is that a 12 will be rolled before a 7.

There is one way to roll a 12 and six ways to roll a 7. So the probability the 12 will come first is 1/7.

Expected return =[ (1/7)*209 + (6/7)*-35 ]/35 = -1/35 = -1/245 = -0.41%.

So the house edge = 0.41%.