I have often wondered "why" that the .380 ammo, any brand in comparison, is more expensive than the same brand name in 9mm? The 9mm is same bullet but usually more lead (weight) the 9mm has a little longer case, more powder and the only common denominator for mfg. costs would be the primer. I do believe that both the 9mm and .380 use the same size/grade of primer. All else should make the 9mm more expensive due to costs of materials... yet this is not so.