My current costs for 223:
1 lbs Varget at $27.99 (got these on a really good sale a couple years ago)
25.5 grs per round
1000 CCI primers for $28.49 (got these on sale years ago)
1000 brass cases for $0 (Although it's kinda cheating, I factor these out just because I use the cases from factory ammo I shoot anyways)
1000 Speer bullets at $129.99 (I bought these with a special discount years ago, but I can't find these prices anymore. Once my stock is gone, I'm paying much more)
Add on tax and I'm paying a little over $0.27 a round. I have gotten lucky getting my components on sale, but I'm not finding anything close to these prices anymore so I suspect these costs are only going to go up. I imagine if you are spending around 40 cents a round, you are still doing quite well.