I reload the 9mm, 45 ACP and .223 Rem. For FMJ, I find the 9mm and .223 Rem to be 75% of the factory ammo while 45 ACP is close to 50%. But for hollow-points and soft-points, it's way cheaper than those.
The advantage for reloading is NOT the cost -- since the cost may even be more if you account for your time. The advantage is the increased accuracy of your shots.
I suggest starting out with the 45 ACP (since it will give you more cost savings). Buy a SINGLE-stage press with 45 ACP dies (I prefer Lee's). Then buy some powder (I prefer WSF), some primers (I prefer CCI), 100-200 cases, 100 Winchester HP or FMJ's, 100 Remington HP or FMJ's then start slow.
Document every stage of your process, e.g., these 10 cartridges use CCI primer, 235-gr Win HP, and xxx gr WSF; while these use Winchester primers, 185-gr Rem HP, and yyy gr Longshot powder.
Observe if you get better accuracy vs. factory ammo (by using a bench rest). See if your gun prefers certain components.
At the very worst, if you decide reloading is NOT worth it, you will end up with 200 backup HP cartridges; and you can resell the (barely-used) dies and press at eBay for up to 75-90% of cost.
Don't use lead! In some ranges, these bullets are NOT allowed.
If you want softer bullets, use the Rainier Ballistics bullets. They are almost as soft as lead but completely copper coated. Reduces lead vapors by as much as 95%. No lead fouling of barrel.