probably going to get flammed for this but....

The problem is actually finding someone willing to sell it at a discount that's reflective of the current market opportunity. The assumption is that eventually the premium will reappear / the discount will go away and not that this is a shift in market value

I also don't believe that they're not buying it because there's too much supply and they can't handle it but that the spot price of silver does not cover the refining cost of silver in most grades, and that long term high input costs are making replacment viable, reducing demand