Rich nailed it with this post. Really depends when and where you bought components.Part of the calculus on this depends on when/where you bought your primers/powder/projectiles. If you buy during shortages you likely pay substantially more.
Give or take I figure a 9mm is around 10-12 cents to reload. That's a spitball estimate.
A good progressive reloading rig with all the many accessories will run you $1000 or so. Every time you think you have everything you need, well, there's something else. The first time you break a decapping pin you'll run out and buy a pack of five or ten. Then you'll want to get go/no go gauges for each caliber. Then you'll want the gizmo that gets all the primers facing the same direction to make loading the primer tube easier. And don't forget an accurate scale and digital caliper. It truly never ends...
That's just for the equipment. Then you need powder, primers and projectiles. You need equipment to clean the brass. If you're doing rifle reloads the case prep process is even longer and more detailed. Clean'em, lube'em, resize'em and then clean'em agin.
But... it's cathartic. I find it relaxing. You can experiment and ladder loads to see what works best for a given firearm. You can make ammo on demand when there's none available, like now. You can customize loads for different shooters. I like my 9mm loads hot but my daughter likes wimpy loads. Actually I like all my loads hot... you should see my .44 mags!
It's a hobby. It's a bit of a science experiment too.
You'll either love it or hate it.
Also what headednorth said. I enjoy reloading and don’t do it for saving money (well maybe for magnum calibers I do). It’s times like these that make me grateful for reloading. I also do it to be a gamer in IDPA/USPSA . Whether my reloads really gives me a huge edge in competition is debatable especially at my skill level