I reload 9mm. I used Berrys plated 115gr, win231, and whatever primers i can find. That was my batch of 1000 rounds and i estimated it cost right about 6.00 for a box of 50.
I spent closer to $8 per 50 for 9mm reloads. In my calculations I include the price of shipping, Hazmat and/or sales tax. Also, I do not shoot cast bullets in 9mm. I use either true jacketed bullets or plated bullets like Berry's or Rainier. I also do not use chinese, russian or any other commie primers, so that costs a little more. If I didn't already have the equipment, I would not reload for the 9mm, but since I already have everything needed, I gladly save the $3 to $6 per box over new factory brass cased ammo.