Sorry for the seeming confusion. I appreciate the replies.
The finders fee or introduction fee is in reference to an existing flying plane for sale.
As an example, a mechanic or airport employee knows that a plane is available for sale and informs the buyer to contact him.
"Hello,
Does anyone have experience with a finders fee or introduction fee?
What is a typical amount paid by a seller to someone for bringing a buyer to a seller?
The only action by the individual is the introduction.
Thanks,
Tony"