What spacecoast said, plus cast your own bullets. I load 44 Mag for pennies and have complete control over what I want.
High side everything:
Primer - .02
Powder - .06
Case - .02 (prorated over the life of the case)
Bullet - .00 (scrounge your alloy)
I can shoot a lot of 44 Mag (45 Colt, 40 S&W, 45 acp - you get the idea) for .10/round (or less), and there's nothing wrong with cast.
Granted, initial setup costs something, but at some point it pays for itself.