APMEX does have 100oz silver bars available. Plus you can buy physical silver right now via Sprott Silver trust in Canada. It is a physical silver trust. Eric Sprott who runs it does not screw around
Last I read shares were 15% above premium. So lets say an oz of silver there costs you 40$ right now
Are you sure you're reading that correctly? 15% above spot is over $5 and eagles at APMEX are less than $4 over spot in quanity.