Options trading strategies are strategies where you combine, often several, derivatives instruments to create a certain risk-return profile (more on that here: Financial Engineering: Static Replication of any Payoff Function). Often we want to know how those strategies would fare in the real world.
The problem is that real data on derivatives are hard to come by and/or very expensive. But we help ourselves with a very good proxy: implied volatility which is freely available for example for many indices. With that, we can use the good old Black-Scholes model to reasonably price options whose strikes are not too far away from the current price of the underlying.
Read on to see how.