I have found 2:
one is a Grex Tritium.TG3, Top Gravity Airbrush, 0.3mm Nozzle for only $209
I have found several like this one: 0.3mm Gravity Feed Pistol Trigger Airbrush Paint Gun for $59.99
I have an Iwata HP-BCS after painting a lot this hurts my finger
Does anyone have one or know of one that they like and is half way affordable?