2-3 day priority shipping means once your package is shipped that is how long the postal system is saying it will take to get your package. That doesn't include the processing time.
Depending on the current workload processing time may vary from 1-2 days. So if an order is place after 5:00pm PST then the following Business day is when we see the order and the processing time begins. Please remember Sat and Sun we do not process orders. ( we are still working but on many other processes like building inventory, cleanroom cleaning and restock, ect..)