Assuming you already have the brass.
Checked the last batch of components I bought and here's what target / practice ammo cost me.
Bullets 124 gr PFP .048
Powder (PowerPistol) .023
Total .088 each
Bullets are typically West Coast or Rainier. All items were purchased from a local shop. Mail order on tips is cheaper, but the shop wil stock just about anything you want, so I pay a little more to support him.