big a paper shops - reps get paid a very small % but they usually do huge volume.
smaller shops - prob make 1.5-3% on deals (can be guaranteed points or based on O fee)
most places wont clawback internal - there is enough shops that need reps vs the other way around that the reps can ask for no clawback

also bad for morale if trying to run a good shop when you claw back iso rep