A clip from a spreadsheet I use for this very reason. This chart addresses the cost of consumables only. Brass is not a consumable by my definition.
I buy Lead bullets from a local manufacturer, your choices may be different.
There are 7000 grains of powder in a pound. I load with winchester 231 at 4.0 grains/round.
9mm component price Units cost per unit units per cartrige cost per cartrige primer $30.00 1000 $0.03 1 $0.03 powder $30.00 7000 $0.00 4 $0.02 bullets $35.00 500 $0.07 1 $0.07 Cost/round $0.12
YMMV
(Had to edit a few of the numbers)
Did anyone factor in a price for time? How long does it take to make a box of 50 rounds reloaded take your amount saves and equal it to that time # and see if that # is worth your time or not.