Back when the micro 380's were all the rage, if I could find 380 at all, it was $18-$22/50. Recently, I've been seeing it for $13-$18/50, not as bad. Still, I can load my own 380 for $6-$7 a box. That makes it worth it to me...all day long.
Of course, I have a 380 worth shooting, a lot, a Sig P232. Very accurate and fun to shoot.
I can't say either about the micro 380's that I have shot.