How do I buy an option with a huge spread?

Interesting, never saw that option. What does it indicate?
Some sort of "last" or "mid"?

 

It is an option pricing model. Also used in account management to value options when market is shut.

 

if underlying price moves outside regular trading hours.

 

Buying far dated calls means never making money despite being right-seen it done many times. Have a think about what you want to do and find a strategy that fits. Buy LEAPs and sell near month calls, maybe?

 

Leaps on high growth stocks would make more sense. i like the idea of selling calls to collect some premium along the way.

 

You may need to model it to determine a reasonable value and then ascertain that value. Within IB TWS option trader, right-click on the column headers, select "Add Model," and then gradually adjust your order towards this model price to increase the likelihood of getting filled near that price.

 

IMHO, you asked the wrong question. The right question is how big is your anticipated move and your assessment of the probability of the move?