Wow, thanks folks, most of my follow-ups were answered in one shot.
What about how many the airlines chooses to order/option to begin with, they can't have all the money needed for potential growth, can they? Unless it is borrowed, shouldn't technically all aircraft order be done at once with no options? How does an airline know how many options are needed? Granted they look at how their numbers are -- I guess if they get to have the option then they will use it when necessary.
Bt then they would not have had the option to order unless the plane existed.
For the most part, ya'll answered my questions, thanks again.
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