A quick google search showed SSA 6.8spc brass selling for 46 cents a piece and Remington 6.8spc brass selling for 45 cents a piece. I generally pay 42 cents a piece direct from SSA as they usually have it on sale a few times a year.
I gave a range of prices. You are welcome to show the lowest price for 6.8 spec brass - even if it is reprocessed. I can't find any, but 300 BLK shooters have that as an option.
I see SSA for 52 cents each and it does appear like it is sometimes 46 cents each.
In 300 BLK, new Remington primed brass - 27 cents each even in small quantities of 100 pieces: