What is the fee for storage per year?

Where are my bullion physically stored?

http://help.stackermarket.com/en/articles/5355736-where-are-my-bullion-physically-stored

Can I visit my bullion and withdraw in person?

http://help.stackermarket.com/en/articles/5355747-can-i-visit-my-bullion-and-withdraw-in-person

Are my bullion holdings fully insured?http://help.stackermarket.com/en/articles/5355742-are-my-bullion-holdings-fully-insured

Is there proof my bullion is physically held in a vault?

http://help.stackermarket.com/en/articles/5355739-is-there-proof-my-bullion-is-physically-held-in-a-vault