Markets are developed, they don't just happen, if they do, someone else beat you to it.
The one advantage we have over the nurserys or the Box stores is that we know what we are talking about, generally they don't. The key is "value added" what are the differences?, why buy mine? the story sells the product, when you have ignorant customers, educate them.
I wouldn't even try to sell a Ponte Tresa, if someone ever asks, I will get them one, chances are slim they would ever ask. By the time I get one, they will be replaced with another new "shiny" object (Tree) Since I have playing with figs it has been Sal's El, RDB, Ponte Tresa, BB10, Several Spanish cultivars, Panachee, and a few others that I have forgotten.
This is a fun thing to do and you can make a little money at it but you will make a lot more money selling Celeste and BT trees than you will with the exotics/premiums.