I was calculating the vig not based on my knowledge of options (it's small), but based on the difference in pricing from buying/selling the same option. It was astronomical. I.E. if the box is touched (selling out of money option), recieve $40. If buying assuming box will be touched, (same box), pay $150.
That's not the right way to look at it. You need to measure the payoff. What is the risk/reward. If you pay 150 for the box, what is the payoff? How much are you risking to make 40 on the box?
You have to calculate the expectancy via touch prob or expiration prob(1/2 PoT) -- dependent on whether you're trading a touch exotic or synthetic Euro barrier (otm duration/horizontal bet vs. itm Px/vertical bet)
I'm gonna be honest, I don't even know what half those words mean. Can you just post a screenshot of a favorable setup or something?