I go thru about a 30cal can of 9mm per month. If I didn't have the 650 press, I wouldn't do it. Too much effort for the savings (vs normal prices, not the inflated 9mm prices right now). I'd just shoot less & buy it if I was still doing it on turret press.
BUT.....the one huge advantage to me is using ACME coated cast bullets - or similar MBC - or similar plated. I primarily shoot steel targets from 30'. I get absolutely nothing back from the ACME bullets. Maybe little specs that feel like a bug landing on you or something. Whereas FMJ/TMJ, will occasionally get a piece of jacket come back. Doesn't really hurt - worst ever has felt like a little sweat bee bite - but still none of that vs some of that....will go with none of it
As far as the economics go....6.7¢ for a 115gr ACME coated bullet, 2.5¢ for a Fiocchi SPP (the 1500 packs), 1.6¢ for Win231/HP38. So call it 11¢ a round. That's with tax and/or shipping as applicable. But the brass has to come from somewhere, so that means occasionally buying a case of commercial ammo or rolling the dice & buying a bag of "1x fired" 9mm brass. My last purchase was a real high mix of WMA brass with crimps so ....blah.....but I'm probably closer to 13-14¢ per round if I include brass value. Not sure how to figure brass value as i have no idea how many times I reload it. Until it fails, or gets stepped on, or gets lost in the grass, or gets given away, or gets.......
And that's also $0 per hr labor for me. Most don't consider that because reloading is a hobby or enjoyable leisure activity. That's fine & I agree. But for me, it's more like a chore that needs to be done....like cleaning guns, mowing grass at the range, or building target stands, don't really enjoy it but tasks that need to be done to facilitate shooting. I haven't timed it exactly but would say its somewhere around 4 hrs total to fill a a 30 cal can (~1200 rds). That's loading/unloading tumbler (not waiting on it), filling primer tubes, inspecting afterward, etc. Not sure, but probably not much more than 4 hrs total time working. But even at $15/hr (and my free time is worth a lot more than that to me) then I'm breaking even vs buying pretty much.