Quick search online and memory from recent FF visit, new x39 brass runs $0.40-$0.60 each. I see this Geco brand fully loaded ammo with boxer primed brass for $0.40 each, sounds like a win to me. For less than the price of naked brass it can be shot once before reloading... Unless the brass sucks bad for some reason?
I did a little reading and saw some reports on undersized flash-holes breaking decapping pins for 9mm but that's nearly the only negative thing I can find, most people seem happy with their loaded ammo and a couple people say it reloads "fine".
Anyone have experience with this stuff?