There's a whole lot of factors. The biggest being how much you shoot. If it's a box a year, spend the $30 and be happy.
If it's thousands of rounds, well then reusing the brass and getting the best price on components is key.
(count me in as one of the guys that doesn't have to put a $ on "my time").
However, reloading is a passtime that you sort of have to take some pain up front to save it on the back end
For example, as soon as primers came back around after the obama shortage, I bought 50,000 small pistol and 50,000 small rifle. My cost per primer is about 4 cents taxes and shipping in from when I bought them. ($4000)
Right now, they look like (if you can find them) that small pistol primers are running around $.12 each. So 50,000 primers would cost almost $7000 taxes and shipping in.
Factory 9mm used to be $15 a box. Now it's closer to $30.
50,000 rounds of 9mm would have been ~$15,000
50,000 rounds today would be ~$30,000
So I guess the point is, you have to fork out the $ for the equipment, the powder, the bullets, the primers, and maybe the brass upfront. Seems insane at the time, how can this be a savings?
HOWEVER, Right now my cost to produce 9mm is $.16 a round. 50,000 x .16 = $8000 So for me to reload I save
TWENTY TWO THOUSAND dollars over factory. Now I don't think I get through 50,000 rounds a year, but it's likely close to 10,000. at $.60 a factory round, that's $6K on just 9mm and that doesn't take into account the .223 I like to plink with, which is even MORE of a savings (powder charge is much more $$$ on rifle cartridges....24 grains vs 4 grains per round) ~7000 grains per pound, again the math can be done.
So in short, there's no real easy answer on if it's worthwhile. Now if you want to factor your time into it: Unless the act of reloading is preventing you from doing something that would make you money, then realistically costing in "time" is kind of silly. If this was so someone owes me $2,000,000 for my time playing COD. The cost savings on the process is more than enough compensation. I don't have to go out and earn $22,000 to cover my ammo bill