JohnPL, my first ever reload, a mid-range .44mag, cost me well over $250. The rest were very cheap. Seriously, it depends on soooooo many variables that you haven't offered up, no reasonable answer to your question can be formed.
Scrounged 9mm brass is free.
Bulk JHP bullets cost ~ 50-60 bucks/1000
Primers bought in large lots <= $15/1000
Pound of SuperBlammo powder ~ $18 bux, good for 1000 loads.
Figure your least cost for consumables ~ $93, if you can scrounge the brass. If not, you can add mebbe $15-20 for brass at a gun show, or pay Starline $65 or so for new brass.
Back to about oh, $105/k for plinking ammo. Lead bullets cost a little less. Premium bullets (Gold Dots, etc.) cost MUCH more.
You can buy new Lee equipment (very modest) for about $100 to $120 for a complete setup. I have about $800 in my Dillon XL650 progressive press and goodies. See why this is so difficult to answer conclusively? I'm sure someone else will be willing to chime in with hints about scrounging wheelweights and casting your own bullets, or how they wouldn't touch Lee equipment with a barge pole, or how they found all they needed at a garage sale for a quarter.
Don't know where you are, but if there's an Academy Sports there, you can find CCI Blazer 9mm FMJ plinking ammo for $3.99 a box. No misprint. US made, factory ammo, for less than the cost of components, and you don't have to chase the empties. Don't get me wrong, I reload, but I don't reload 9mm plinkers.