Lease Option Fee Question

I’m about to do my first lease option and need some clarification.
I’ve read here that the option fee is paid to the seller because he is allowing the T/B the ability to excecise an option to buy your house.
Therefore does the seller keep the option fee on top of the price of the house or am I dreaming? Assuming we close of course.
And if we don’t close I keep the fee. Right? Regardless of the reason?

Need more info. Where are you in this deal? And what type of lease option deal is this?