StyrAug, I can appreciate your need to make a profit, but a couple points if I may:
Did you say you sell an average of 3 guns per Week? You may increase your overall profit, if you accept a lower markup on a higher volume.
I believe that the number of FFL's has decreased because the BATF, under the direction of Bill Clinton, had a program to erradicate the "kitchen table" dealers.
I also believe that certain FFL dealers approve of this program because it eliminates the competition.
You have my admiration, and my sypathy if you are indeed making a living on selling 3 guns a week.