Sent to me by KEN-NJ:
On the Mint Site
Due to the United States Mint’s quarterly inventory, expedited shipping will not be available for orders placed from April 4 through April 10, 2011. Orders over $300 and orders containing gold or platinum United States Mint collectibles will receive a complimentary upgrade, but may experience a slight delay. Expedited shipping will be available again for orders placed on or after April 11, 2011. We apologize for any inconvenience this may cause.