Once each quarter, you are billed for storage fees. That amount is automatically withdrawn from your cash account. If no cash is present, you will be notified and given an opportunity to pay the storage fee.
If you subsequently fail to respond to requests to pay your storage fees in a timely manner, then, as you would expect, the Hard Assets Alliance retains the right to charge a late fee ($15 per invoice outstanding more than 30 days) and to redeem the amount of your holdings required to pay for storage fees past due.
Any redemption will be at then current market rates as published in trading portal and for the minimum of metals required to satisfy the outstanding balance.