I've fed my guns a lot of Georgia Arms ammo. Never had a single problem from it. If you go to their website, they have two "kinds" of ammo. (Multiple cartridges/bullets/etc.) But they have what is marked "NEW", which is loaded in new brass. Their other ammo (not marked NEW) is all once fired brass (some possibly more than once). They are one of the bigger buyers of once fired military brass, that could have put them out of business in last years debocale.
Just for price comparisons, last time I looked...
1000 rds- .223 Rem, 55 gr. FMJ- $350
1000 rds- 9mm Luger, 115 gr. FMJ- $240
Wyman