On Saturdays, your customers can receive two-day packages from FedEx.
Cost? An extra ten dollars.
On Saturdays, your customers can receive two to three-day priority mail packages from the U.S. Postal Service.
Cost? Three dollars, and there's no extra charge.
On Saturdays, your customers cannot receive two-day packages from UPS.
Sorry.
So, what's your priority?
Priority mail from the U.S. Postal Service.