That'll dependent on manufacturer, your location, general availability, and demand. The .380 cartridges are in a bit of a shortage state in the US at the moment, and this has driven prices up. Generally, $25 - $35 for a box of 50 seems to be the norm, with specialty loads going higher.
You can only use .380 ACP ammo in a .380 pistol. Period.
New, about $380 New, about $380
The Airbus cost over $500,000,000
Which model?
Many makers offer firearms that shoot the 380 ACP.
Yes- you use the ammunition that is marked on the firearm.
it depends on how much they cost
380 (silver) Fish
a round 28-35 dallors
r5 bulttet
Depends on which 9mm you are refering to
50-150 USD.