100-1000 depending on exactly what you want/have.
25-75 USD
$75-$125, depending on model and condition.
You don't define what "better" means to you. Price? Size?
50-500 depending on specifics
380 auto. Many good brands of ammo out there.
Try want ads, gun shows, gun shops.
Russian made
2mm in case length.
Near the firing pin
Best left to a gunsmith
The .380 automatic cannot shoot 9mm Parabellum ammo.
Please provide a serial number and ask again