As others have said, you might not save a whole lot just based of those two calibers alone.
For me:
AA2230 - $129.75/8lbs
55gr FMJ pulled - $85/1000
CCI primer - $26/1000
I don't factor in case cost, because when it's time to get new cases (which isn't often since I do very light loads), I just buy factory ammo and save the cases. I have quite a bit of Federal AE223 saved from when I was able to get it for $6/20, now it's $11/20 around here.
Anyway, that brings me to $.164/ea, or 164.29/1000 for .223. I don't reload for 9mm, but I do reload for .40S&W. My cost for those is $.149/ea or $148.57/1000 using plated bullets, and that's just using powder and primers I got at a retail store. I will save a lot more when I buy in bulk online.
I reload for a couple reasons:
-Sure, I save $2-3/box on .223 and $7.50/box on .40S&W, but I also shoot a lot more since I can afford to. Essentially, I'm spending the same amount on ammo alone, but that money goes a lot farther.
-I also reload because I can tailor the round to my own specific firearm - the only rounds that shoot almost as well as my reloads are top-dollar stuff that runs $1-2/ea.
-You will spend a lot of money on reloading equipment. You can tell yourself now you only want to get by with the least possible amount of equipment, but you will always find something else you want or need.
-I enjoy reloading, almost as much, if not as much as shooting to be honest with you. It's calming and gives me a small sense of accomplishment\pride. Plus, it's really neat to be shooting ammo you technically made or tuned to your particular firearm.
With that said, with the amount of ammo you shoot, you're going to tire of a single stage very, very quickly. I did, gave up on reloading .223 and .40S&W, then finally broke down and bought a progressive press I had been thinking about for over a year. Now that I have it, I wish I had just bought one before when I had the opportunity, or started out on one. If you are mechanically inclined, patient, have a careful eye, and know when you stop before you go too far, I don't see why starting on a progressive would be a bad thing. It is a big investment though, one you may not be willing to take right now, because reloading really isn't for everyone.
I would suggest trying out a press (or ten) before you make the decision to buy one. A progressive may be really daunting for you, a single stage may be too boring (although you will probably always have a use for one, especially if you get once-fired range brass and a Redding G-RX die), and maybe you find a turret is your sweet spot. If the availability is there to try them out, I say go for it.
It also depends on how valuable your time is to you, as was said before. If you're only got an hour of free time a night, you may only be able to get 50-100 done on a single stage, 100-200 on a turret, or 400+ on a progressive.