$0.20 for brass - ($300/1500, PPU primed brass from Wideners)
$0.11 for bullets - ($539/5000, 75 gr mil-spec from Wideners)
$0.05 for powder - ($118/8 lb, TAC from Wideners)
That's $0.36round, $7.20/20 rounds, $18.00 /50 rounds, $36.00/100 rounds or $360/1000 rounds for match quality ammo. There's the residual value of the once fired brass, that reduces the real net cost so this is actually the upper bound on cost. These are today's prices, as I just took delilvery of these items this week.
If one assumes you can get 10 reloads from the brass, the cost goes down to $0.20/round or $202/1000 rounds. This is probably the lower bound.
I have a bunch of components I purchased over the years. I don't need to use the PRVI stuff. I can use Hornady bullets and Winchester primers and reload for about $0.25 per round.