I don't remember how much all the different components cost...brass was the most expensive, but is obviously reusable, and the straight walled cartridge should net you more use before they wear out. I'd say I was somewhere near 50cpr for component costs, estimating using the brass 10 times (which is probably a conservative guess on the life of straight walled brass).
Quick estimates, if any of these look really off someone let me know, but I think they're appropriate (and also rounded off the dollar amounts a little to account for tax or shipping, etc...):
BRASS: $70/100 @ 10 uses...............$0.07
PRIMERS: $30/1000...........................$0.03
BULLETS: $90/500.............................$0.18
POWDER: $30/lb @ ~175 rounds/lb...$0.17
TOTAL CPR: $0.45 +/-
Adjust for how hot you load and whether you can find components at these prices near you currently or not. I know primers were getting expensive, and powder scarce a while ago. This also doesn't account for the cost of dies and other equipment obviously either.