Most term lenders like FC and Dealstruck dont allow additional broker fees. So best of luck trying to get it done with them. They are good for the $150k+ deals for well qualified merchants who would laugh at a 1.39 offer and 10% broker fees.
10% ISO fee is just plain greedy and for real desperate or duped merchants. I guess that is why a lot of merchants shop and find the broker that does not charge those fees.
Regardless of the opinion on this, the board has become a great source for merchants and they can find out a lot about the company or broker they might work with..