I haven't seen this mentioned, but when junk silver is touted, it is always via face value as compared to actual weight in 90% silver. I have run across dimes and quarters that were worn so thin that they were worth much less in value.
Mebbe there aren't as many of them, but I'd hate to buy a sealed $100 bag for $1,500 and risk finding that many of 'em were so worn down that they were worth a couple of hundred bucks less.
I could be wrong but for example today AMPEX is offering a $500 face value bag for $7,035.60 and boasting that is as little as $4.99 over spot... that is a 36% mark-up.
BTW, there is 357.5 oz of silver in the bag and that makes it $19.68 per oz today...
Good luck finding a $500 face value bag of 90% silver coins by just going to the bank and asking for it and getting it for $500.00... won’t happen without buying a lot of coins.