You also have to note that at $0.26 for brass, Nathan is talking about loading new brass to compare with the price of a similar commercial new round. Most of us use the brass probably at least six times before the mouth starts splitting from the heavy roll crimps needed for shooting them in the less massive revolvers, so for REloads, the price for brass drops to about $0.04 per round. Less if you have a gun that doesn't require such a stiff crimp or allows a taper crimp or if you anneal case mouths. The $0.17 bullet price is reduced if you cast your own from scrap alloy. So I would say, using Nathan's sales tax number for the components, about $21/50 rds with commercial cast bullets and about $14/50 rds if I allow three or four cents for powder coat or lube plus a homemade gas check on bullets cast from free scrap.
I can't bring myself to count the labor for the same reason as Cdoc42's point to his dentist. I compare it to the entertainment proposition of watching TV. At $80/hour, it would be nowhere near worth bothering with except maybe for the Superbowl or a concert or other special show for which the tickets and travel time and ticket cost to see it live would make it more expensive than the TV time. Plus, with commercial TV being about 1/3 commercials now, the actual program content viewing time for someone earning $80/hr would come up to $120/hr. This makes movie tickets look cheap in comparison to watching commercial TV live. Especially when you consider that news or other informational viewing can be handled by listening to the radio while you reload. Doing that, if you pay for the listening time, the reloading is free.