Wow.

I reload .45 ACP for Bullseye match shooting. It's something that I've been doing for years - many 10s of thousands of rounds.
My basic load is a 200 gr. LSWC and 4.0 grains of Bullseye. That gets me a bullet moving at 750 fps, enough to keep it stable and accurate at 50 yards.
Cost - Buying lead bullets 1000 at a time (about $80 plus s/h) lets say 10 cents per, so 100 costs $10. Powder (1750 loads per pound is about 1.5 cents a load). Primers are 3 cents. Brass - I have a gazillion pieces of brass so I don't count that.....and some of those cases have been reloaded 40 times.
So....10 + 1.5 + 3 = 14.5 cents a round or $14.50 per 100.
My cost is lower than that because I cast my own bullets - doing that lowers the cost per 100 to $4.50.
The $4.50 is unrealistic, I know, for a casual shooter or some one just starting out as a reloader but it is possible. (my actual cost, at this point in time, is even lower - I'm using primers bought in 1989 when the cost was half what it is now and powder bought at $16 a pound as opposed to over $20)
Pete