Top Shelf has excellent shipping rates, but what is TSAXPRESS exactly? TSAXPRESS is a shipping option applied to any cart that has aquarium supplies with a total value of $49 or more. Carts with an aquarium supplies value of $49 or more, free groundshippingwill be applied. Carts with a aquarium supplies value of $399 or more ship FEDEX Express OVERNIGHT FREE. Orders will ship same day if received before 2pm EST Monday – Thursday. If received on Friday or after 2pm EST they will ship on the next Business day.  If you have an emergency or just can not wait for your equipment to get to your door, Top Shelf Aquatic’s also offers priority overnightshippingjust for you!