modify the option pricing model to list strike prices in $1 increments. The $2.50 model is outdated.
Robert Rogers commented
add weekly option prices.
Howard Beckett commented
The price of the underlying stock usually dictates the strike price increments. Compare Google (GOOG) and Citibank (C), for example. One underlying is around $500 and the other at $5 and their actual options increments reflect that difference. Furthermore, the model should imitate the real world and NOT have increments that are not actually available in the marketplace.