The premiums tend to be high percentage wise.
I have a couple hundred pounds of wire copper shot chops in bags. Each bag weighs in about 10 pounds. I use to buy in #60 pound shipments in a USPS flag rate box.
I happen to like the copper shot. I would rather sell it than my coins when times get rough. I no longer buy the bars and rounds due to the extra prem over shot.
If Copper drops to the two dollar range, I will like load up on copper again.